diff --git a/lib/ext2fs/qcow2.h b/lib/ext2fs/qcow2.h
index 81e0ec9..b997653 100644
--- a/lib/ext2fs/qcow2.h
+++ b/lib/ext2fs/qcow2.h
@@ -30,8 +30,8 @@
 
 #define QCOW_MAGIC (('Q' << 24) | ('F' << 16) | ('I' << 8) | 0xfb)
 #define QCOW_VERSION		2
-#define QCOW_OFLAG_COPIED	(1LL << 63)
-#define QCOW_OFLAG_COMPRESSED	(1LL << 62)
+#define QCOW_OFLAG_COPIED	(1LLU << 63)
+#define QCOW_OFLAG_COMPRESSED	(1LLU << 62)
 
 #define QCOW_COMPRESSED		1
 #define QCOW_ENCRYPTED		2
diff --git a/misc/e2image.c b/misc/e2image.c
index e6ea52a..36769c1 100644
--- a/misc/e2image.c
+++ b/misc/e2image.c
@@ -47,7 +47,7 @@ extern int optind;
 #include "../version.h"
 #include "nls-enable.h"
 
-#define QCOW_OFLAG_COPIED     (1LL << 63)
+#define QCOW_OFLAG_COPIED     (1LLU << 63)
 
 
 const char * program_name = "e2image";