diff --git a/linux-user/mips/cpu_loop.c b/linux-user/mips/cpu_loop.c
index cfe7ba5c47..f0831379cc 100644
--- a/linux-user/mips/cpu_loop.c
+++ b/linux-user/mips/cpu_loop.c
@@ -385,7 +385,6 @@ 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_MIPS64R2 ||
                               env->insn_flags & ISA_MIPS32R6 ||
                               env->insn_flags & ISA_MIPS64R6;
 
diff --git a/target/mips/mips-defs.h b/target/mips/mips-defs.h
index 23ce8b8406..b36b59c12d 100644
--- a/target/mips/mips-defs.h
+++ b/target/mips/mips-defs.h
@@ -18,7 +18,6 @@
 #define ISA_MIPS5         0x0000000000000010ULL
 #define ISA_MIPS32        0x0000000000000020ULL
 #define ISA_MIPS32R2      0x0000000000000040ULL
-#define ISA_MIPS64R2      0x0000000000000100ULL
 #define ISA_MIPS32R3      0x0000000000000200ULL
 #define ISA_MIPS64R3      0x0000000000000400ULL
 #define ISA_MIPS32R5      0x0000000000000800ULL
@@ -78,7 +77,7 @@
 
 /* MIPS Technologies "Release 2" */
 #define CPU_MIPS32R2    (CPU_MIPS32R1 | ISA_MIPS32R2)
-#define CPU_MIPS64R2    (CPU_MIPS64R1 | CPU_MIPS32R2 | ISA_MIPS64R2)
+#define CPU_MIPS64R2    (CPU_MIPS64R1 | CPU_MIPS32R2)
 
 /* MIPS Technologies "Release 3" */
 #define CPU_MIPS32R3    (CPU_MIPS32R2 | ISA_MIPS32R3)
diff --git a/target/mips/translate.c b/target/mips/translate.c
index 172027f9d6..9fc9dedf30 100644
--- a/target/mips/translate.c
+++ b/target/mips/translate.c
@@ -28621,7 +28621,7 @@ static void decode_opc_special3(CPUMIPSState *env, DisasContext *ctx)
     case OPC_DINSM:
     case OPC_DINSU:
     case OPC_DINS:
-        check_insn(ctx, ISA_MIPS64R2);
+        check_insn(ctx, ISA_MIPS32R2);
         check_mips_64(ctx);
         gen_bitops(ctx, op1, rt, rs, sa, rd);
         break;
@@ -28641,7 +28641,7 @@ static void decode_opc_special3(CPUMIPSState *env, DisasContext *ctx)
             decode_opc_special3_r6(env, ctx);
             break;
         default:
-            check_insn(ctx, ISA_MIPS64R2);
+            check_insn(ctx, ISA_MIPS32R2);
             check_mips_64(ctx);
             op2 = MASK_DBSHFL(ctx->opcode);
             gen_bshfl(ctx, op2, rt, rd);