diff --git a/target/mips/internal.h b/target/mips/internal.h
index 76269cfc7bb..97899dbd3c8 100644
--- a/target/mips/internal.h
+++ b/target/mips/internal.h
@@ -308,7 +308,7 @@ static inline void compute_hflags(CPUMIPSState *env)
     } else if (((env->hflags & MIPS_HFLAG_KSU) == MIPS_HFLAG_UM) &&
                !(env->CP0_Status & (1 << CP0St_UX))) {
         env->hflags |= MIPS_HFLAG_AWRAP;
-    } else if (env->insn_flags & ISA_MIPS64R6) {
+    } else if (env->insn_flags & ISA_MIPS32R6) {
         /* Address wrapping for Supervisor and Kernel is specified in R6 */
         if ((((env->hflags & MIPS_HFLAG_KSU) == MIPS_HFLAG_SM) &&
              !(env->CP0_Status & (1 << CP0St_SX))) ||
diff --git a/target/mips/mips-defs.h b/target/mips/mips-defs.h
index ea9dcc7c98e..df2ffae5718 100644
--- a/target/mips/mips-defs.h
+++ b/target/mips/mips-defs.h
@@ -27,7 +27,6 @@
 #define ISA_MIPS32R3      0x0000000000000200ULL
 #define ISA_MIPS32R5      0x0000000000000800ULL
 #define ISA_MIPS32R6      0x0000000000002000ULL
-#define ISA_MIPS64R6      0x0000000000004000ULL
 #define ISA_NANOMIPS32    0x0000000000008000ULL
 /*
  *   bits 24-39: MIPS ASEs
@@ -90,7 +89,7 @@
 
 /* MIPS Technologies "Release 6" */
 #define CPU_MIPS32R6    (CPU_MIPS32R5 | ISA_MIPS32R6)
-#define CPU_MIPS64R6    (CPU_MIPS64R5 | CPU_MIPS32R6 | ISA_MIPS64R6)
+#define CPU_MIPS64R6    (CPU_MIPS64R5 | CPU_MIPS32R6)
 
 /* Wave Computing: "nanoMIPS" */
 #define CPU_NANOMIPS32  (CPU_MIPS32R6 | ISA_NANOMIPS32)
diff --git a/linux-user/elfload.c b/linux-user/elfload.c
index 0b02a926025..e875a5387cc 100644
--- a/linux-user/elfload.c
+++ b/linux-user/elfload.c
@@ -997,7 +997,7 @@ static uint32_t get_elf_hwcap(void)
 #define GET_FEATURE(flag, hwcap) \
     do { if (cpu->env.insn_flags & (flag)) { hwcaps |= hwcap; } } while (0)
 
-    GET_FEATURE(ISA_MIPS32R6 | ISA_MIPS64R6, HWCAP_MIPS_R6);
+    GET_FEATURE(ISA_MIPS32R6, HWCAP_MIPS_R6);
     GET_FEATURE(ASE_MSA, HWCAP_MIPS_MSA);
 
 #undef GET_FEATURE
diff --git a/linux-user/mips/cpu_loop.c b/linux-user/mips/cpu_loop.c
index a2aa8167210..1e4acf3d6e3 100644
--- a/linux-user/mips/cpu_loop.c
+++ b/linux-user/mips/cpu_loop.c
@@ -386,8 +386,7 @@ void target_cpu_copy_regs(CPUArchState *env, struct target_pt_regs *regs)
     prog_req.fre &= interp_req.fre;
 
     bool cpu_has_mips_r2_r6 = env->insn_flags & ISA_MIPS32R2 ||
-                              env->insn_flags & ISA_MIPS32R6 ||
-                              env->insn_flags & ISA_MIPS64R6;
+                              env->insn_flags & ISA_MIPS32R6;
 
     if (prog_req.fre && !prog_req.frdefault && !prog_req.fr1) {
         env->CP0_Config5 |= (1 << CP0C5_FRE);
diff --git a/target/mips/tlb_helper.c b/target/mips/tlb_helper.c
index 94a482e3dbe..68d766f90a3 100644
--- a/target/mips/tlb_helper.c
+++ b/target/mips/tlb_helper.c
@@ -1025,7 +1025,7 @@ void mips_cpu_do_interrupt(CPUState *cs)
  enter_debug_mode:
         if (env->insn_flags & ISA_MIPS3) {
             env->hflags |= MIPS_HFLAG_64;
-            if (!(env->insn_flags & ISA_MIPS64R6) ||
+            if (!(env->insn_flags & ISA_MIPS32R6) ||
                 env->CP0_Status & (1 << CP0St_KX)) {
                 env->hflags &= ~MIPS_HFLAG_AWRAP;
             }
@@ -1054,7 +1054,7 @@ void mips_cpu_do_interrupt(CPUState *cs)
         env->CP0_Status |= (1 << CP0St_ERL) | (1 << CP0St_BEV);
         if (env->insn_flags & ISA_MIPS3) {
             env->hflags |= MIPS_HFLAG_64;
-            if (!(env->insn_flags & ISA_MIPS64R6) ||
+            if (!(env->insn_flags & ISA_MIPS32R6) ||
                 env->CP0_Status & (1 << CP0St_KX)) {
                 env->hflags &= ~MIPS_HFLAG_AWRAP;
             }
@@ -1240,7 +1240,7 @@ void mips_cpu_do_interrupt(CPUState *cs)
             env->CP0_Status |= (1 << CP0St_EXL);
             if (env->insn_flags & ISA_MIPS3) {
                 env->hflags |= MIPS_HFLAG_64;
-                if (!(env->insn_flags & ISA_MIPS64R6) ||
+                if (!(env->insn_flags & ISA_MIPS32R6) ||
                     env->CP0_Status & (1 << CP0St_KX)) {
                     env->hflags &= ~MIPS_HFLAG_AWRAP;
                 }
diff --git a/target/mips/translate.c b/target/mips/translate.c
index de3a6b5ed65..f32b5ebdd7e 100644
--- a/target/mips/translate.c
+++ b/target/mips/translate.c
@@ -29078,7 +29078,7 @@ static void mips_tr_init_disas_context(DisasContextBase *dcbase, CPUState *cs)
 #else
         ctx->mem_idx = hflags_mmu_index(ctx->hflags);
 #endif
-    ctx->default_tcg_memop_mask = (ctx->insn_flags & (ISA_MIPS32R6 | ISA_MIPS64R6 |
+    ctx->default_tcg_memop_mask = (ctx->insn_flags & (ISA_MIPS32R6 |
                                   INSN_LOONGSON3A)) ? MO_UNALN : MO_ALIGN;
 
     LOG_DISAS("\ntb %p idx %d hflags %04x\n", ctx->base.tb, ctx->mem_idx,
