diff --git a/block/qapi.c b/block/qapi.c
index 84a0aadc09..3acc118c44 100644
--- a/block/qapi.c
+++ b/block/qapi.c
@@ -62,7 +62,6 @@ BlockDeviceInfo *bdrv_block_device_info(BlockBackend *blk,
     info->ro                     = bs->read_only;
     info->drv                    = g_strdup(bs->drv->format_name);
     info->encrypted              = bs->encrypted;
-    info->encryption_key_missing = false;
 
     info->cache = g_new(BlockdevCacheInfo, 1);
     *info->cache = (BlockdevCacheInfo) {
diff --git a/docs/system/deprecated.rst b/docs/system/deprecated.rst
index 9c8c62da44..5e776fb4b0 100644
--- a/docs/system/deprecated.rst
+++ b/docs/system/deprecated.rst
@@ -184,16 +184,6 @@ Use argument ``id`` instead.
 
 Use argument ``id`` instead.
 
-``query-named-block-nodes`` result ``encryption_key_missing`` (since 2.10.0)
-''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''
-
-Always false.
-
-``query-block`` result ``inserted.encryption_key_missing`` (since 2.10.0)
-'''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''
-
-Always false.
-
 ``blockdev-add`` empty string argument ``backing`` (since 2.10.0)
 '''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''
 
diff --git a/docs/system/removed-features.rst b/docs/system/removed-features.rst
index 8ca51e1f7c..06d6540ad2 100644
--- a/docs/system/removed-features.rst
+++ b/docs/system/removed-features.rst
@@ -103,6 +103,16 @@ chardev client socket with ``wait`` option (removed in 6.0)
 Character devices creating sockets in client mode should not specify
 the 'wait' field, which is only applicable to sockets in server mode
 
+``query-named-block-nodes`` result ``encryption_key_missing`` (removed in 6.0)
+''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''
+
+Removed with no replacement.
+
+``query-block`` result ``inserted.encryption_key_missing`` (removed in 6.0)
+'''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''
+
+Removed with no replacement.
+
 Human Monitor Protocol (HMP) commands
 -------------------------------------
 
diff --git a/qapi/block-core.json b/qapi/block-core.json
index 9f555d5c1d..d256b7b776 100644
--- a/qapi/block-core.json
+++ b/qapi/block-core.json
@@ -319,8 +319,6 @@
 #
 # @encrypted: true if the backing device is encrypted
 #
-# @encryption_key_missing: always false
-#
 # @detect_zeroes: detect and optimize zero writes (Since 2.1)
 #
 # @bps: total throughput limit in bytes per second is specified
@@ -385,10 +383,6 @@
 # @dirty-bitmaps: dirty bitmaps information (only present if node
 #                 has one or more dirty bitmaps) (Since 4.2)
 #
-# Features:
-# @deprecated: Member @encryption_key_missing is deprecated.  It is
-#              always false.
-#
 # Since: 0.14
 #
 ##
@@ -396,8 +390,6 @@
   'data': { 'file': 'str', '*node-name': 'str', 'ro': 'bool', 'drv': 'str',
             '*backing_file': 'str', 'backing_file_depth': 'int',
             'encrypted': 'bool',
-            'encryption_key_missing': { 'type': 'bool',
-                                        'features': [ 'deprecated' ] },
             'detect_zeroes': 'BlockdevDetectZeroesOptions',
             'bps': 'int', 'bps_rd': 'int', 'bps_wr': 'int',
             'iops': 'int', 'iops_rd': 'int', 'iops_wr': 'int',
diff --git a/tests/qemu-iotests/184.out b/tests/qemu-iotests/184.out
index 87c73070e3..77e5489d65 100644
--- a/tests/qemu-iotests/184.out
+++ b/tests/qemu-iotests/184.out
@@ -54,8 +54,7 @@ Testing:
                 "direct": false,
                 "writeback": true
             },
-            "file": "json:{\"throttle-group\": \"group0\", \"driver\": \"throttle\", \"file\": {\"driver\": \"null-co\"}}",
-            "encryption_key_missing": false
+            "file": "json:{\"throttle-group\": \"group0\", \"driver\": \"throttle\", \"file\": {\"driver\": \"null-co\"}}"
         },
         {
             "iops_rd": 0,
@@ -82,8 +81,7 @@ Testing:
                 "direct": false,
                 "writeback": true
             },
-            "file": "null-co://",
-            "encryption_key_missing": false
+            "file": "null-co://"
         }
     ]
 }
diff --git a/tests/qemu-iotests/191.out b/tests/qemu-iotests/191.out
index 022021efab..ea88777374 100644
--- a/tests/qemu-iotests/191.out
+++ b/tests/qemu-iotests/191.out
@@ -150,8 +150,7 @@ wrote 65536/65536 bytes at offset 1048576
                 "direct": false,
                 "writeback": true
             },
-            "file": "TEST_DIR/t.IMGFMT.ovl2",
-            "encryption_key_missing": false
+            "file": "TEST_DIR/t.IMGFMT.ovl2"
         },
         {
             "iops_rd": 0,
@@ -179,8 +178,7 @@ wrote 65536/65536 bytes at offset 1048576
                 "direct": false,
                 "writeback": true
             },
-            "file": "TEST_DIR/t.IMGFMT.ovl2",
-            "encryption_key_missing": false
+            "file": "TEST_DIR/t.IMGFMT.ovl2"
         },
         {
             "iops_rd": 0,
@@ -221,8 +219,7 @@ wrote 65536/65536 bytes at offset 1048576
                 "direct": false,
                 "writeback": true
             },
-            "file": "TEST_DIR/t.IMGFMT",
-            "encryption_key_missing": false
+            "file": "TEST_DIR/t.IMGFMT"
         },
         {
             "iops_rd": 0,
@@ -250,8 +247,7 @@ wrote 65536/65536 bytes at offset 1048576
                 "direct": false,
                 "writeback": true
             },
-            "file": "TEST_DIR/t.IMGFMT",
-            "encryption_key_missing": false
+            "file": "TEST_DIR/t.IMGFMT"
         },
         {
             "iops_rd": 0,
@@ -292,8 +288,7 @@ wrote 65536/65536 bytes at offset 1048576
                 "direct": false,
                 "writeback": true
             },
-            "file": "TEST_DIR/t.IMGFMT.mid",
-            "encryption_key_missing": false
+            "file": "TEST_DIR/t.IMGFMT.mid"
         },
         {
             "iops_rd": 0,
@@ -321,8 +316,7 @@ wrote 65536/65536 bytes at offset 1048576
                 "direct": false,
                 "writeback": true
             },
-            "file": "TEST_DIR/t.IMGFMT.mid",
-            "encryption_key_missing": false
+            "file": "TEST_DIR/t.IMGFMT.mid"
         },
         {
             "iops_rd": 0,
@@ -351,8 +345,7 @@ wrote 65536/65536 bytes at offset 1048576
                 "direct": false,
                 "writeback": true
             },
-            "file": "TEST_DIR/t.IMGFMT.base",
-            "encryption_key_missing": false
+            "file": "TEST_DIR/t.IMGFMT.base"
         },
         {
             "iops_rd": 0,
@@ -380,8 +373,7 @@ wrote 65536/65536 bytes at offset 1048576
                 "direct": false,
                 "writeback": true
             },
-            "file": "TEST_DIR/t.IMGFMT.base",
-            "encryption_key_missing": false
+            "file": "TEST_DIR/t.IMGFMT.base"
         }
     ]
 }
@@ -565,8 +557,7 @@ wrote 65536/65536 bytes at offset 1048576
                 "direct": false,
                 "writeback": true
             },
-            "file": "TEST_DIR/t.IMGFMT.ovl2",
-            "encryption_key_missing": false
+            "file": "TEST_DIR/t.IMGFMT.ovl2"
         },
         {
             "iops_rd": 0,
@@ -594,8 +585,7 @@ wrote 65536/65536 bytes at offset 1048576
                 "direct": false,
                 "writeback": true
             },
-            "file": "TEST_DIR/t.IMGFMT.ovl2",
-            "encryption_key_missing": false
+            "file": "TEST_DIR/t.IMGFMT.ovl2"
         },
         {
             "iops_rd": 0,
@@ -647,8 +637,7 @@ wrote 65536/65536 bytes at offset 1048576
                 "direct": false,
                 "writeback": true
             },
-            "file": "TEST_DIR/t.IMGFMT.ovl3",
-            "encryption_key_missing": false
+            "file": "TEST_DIR/t.IMGFMT.ovl3"
         },
         {
             "iops_rd": 0,
@@ -676,8 +665,7 @@ wrote 65536/65536 bytes at offset 1048576
                 "direct": false,
                 "writeback": true
             },
-            "file": "TEST_DIR/t.IMGFMT.ovl3",
-            "encryption_key_missing": false
+            "file": "TEST_DIR/t.IMGFMT.ovl3"
         },
         {
             "iops_rd": 0,
@@ -706,8 +694,7 @@ wrote 65536/65536 bytes at offset 1048576
                 "direct": false,
                 "writeback": true
             },
-            "file": "TEST_DIR/t.IMGFMT.base",
-            "encryption_key_missing": false
+            "file": "TEST_DIR/t.IMGFMT.base"
         },
         {
             "iops_rd": 0,
@@ -735,8 +722,7 @@ wrote 65536/65536 bytes at offset 1048576
                 "direct": false,
                 "writeback": true
             },
-            "file": "TEST_DIR/t.IMGFMT.base",
-            "encryption_key_missing": false
+            "file": "TEST_DIR/t.IMGFMT.base"
         },
         {
             "iops_rd": 0,
@@ -777,8 +763,7 @@ wrote 65536/65536 bytes at offset 1048576
                 "direct": false,
                 "writeback": true
             },
-            "file": "TEST_DIR/t.IMGFMT",
-            "encryption_key_missing": false
+            "file": "TEST_DIR/t.IMGFMT"
         },
         {
             "iops_rd": 0,
@@ -806,8 +791,7 @@ wrote 65536/65536 bytes at offset 1048576
                 "direct": false,
                 "writeback": true
             },
-            "file": "TEST_DIR/t.IMGFMT",
-            "encryption_key_missing": false
+            "file": "TEST_DIR/t.IMGFMT"
         }
     ]
 }
diff --git a/tests/qemu-iotests/273.out b/tests/qemu-iotests/273.out
index 8247cbaea1..4e840b6730 100644
--- a/tests/qemu-iotests/273.out
+++ b/tests/qemu-iotests/273.out
@@ -69,8 +69,7 @@ Testing: -blockdev file,node-name=base,filename=TEST_DIR/t.IMGFMT.base -blockdev
                 "direct": false,
                 "writeback": true
             },
-            "file": "TEST_DIR/t.IMGFMT",
-            "encryption_key_missing": false
+            "file": "TEST_DIR/t.IMGFMT"
         },
         {
             "iops_rd": 0,
@@ -98,8 +97,7 @@ Testing: -blockdev file,node-name=base,filename=TEST_DIR/t.IMGFMT.base -blockdev
                 "direct": false,
                 "writeback": true
             },
-            "file": "TEST_DIR/t.IMGFMT",
-            "encryption_key_missing": false
+            "file": "TEST_DIR/t.IMGFMT"
         },
         {
             "iops_rd": 0,
@@ -139,8 +137,7 @@ Testing: -blockdev file,node-name=base,filename=TEST_DIR/t.IMGFMT.base -blockdev
                 "direct": false,
                 "writeback": true
             },
-            "file": "TEST_DIR/t.IMGFMT.mid",
-            "encryption_key_missing": false
+            "file": "TEST_DIR/t.IMGFMT.mid"
         },
         {
             "iops_rd": 0,
@@ -168,8 +165,7 @@ Testing: -blockdev file,node-name=base,filename=TEST_DIR/t.IMGFMT.base -blockdev
                 "direct": false,
                 "writeback": true
             },
-            "file": "TEST_DIR/t.IMGFMT.mid",
-            "encryption_key_missing": false
+            "file": "TEST_DIR/t.IMGFMT.mid"
         },
         {
             "iops_rd": 0,
@@ -197,8 +193,7 @@ Testing: -blockdev file,node-name=base,filename=TEST_DIR/t.IMGFMT.base -blockdev
                 "direct": false,
                 "writeback": true
             },
-            "file": "TEST_DIR/t.IMGFMT.base",
-            "encryption_key_missing": false
+            "file": "TEST_DIR/t.IMGFMT.base"
         }
     ]
 }
