diff --git a/target/mips/mips-defs.h b/target/mips/mips-defs.h
index b36b59c12d..ccdde0b4a4 100644
--- a/target/mips/mips-defs.h
+++ b/target/mips/mips-defs.h
@@ -19,7 +19,6 @@
 #define ISA_MIPS32        0x0000000000000020ULL
 #define ISA_MIPS32R2      0x0000000000000040ULL
 #define ISA_MIPS32R3      0x0000000000000200ULL
-#define ISA_MIPS64R3      0x0000000000000400ULL
 #define ISA_MIPS32R5      0x0000000000000800ULL
 #define ISA_MIPS64R5      0x0000000000001000ULL
 #define ISA_MIPS32R6      0x0000000000002000ULL
@@ -81,7 +80,7 @@
 
 /* MIPS Technologies "Release 3" */
 #define CPU_MIPS32R3    (CPU_MIPS32R2 | ISA_MIPS32R3)
-#define CPU_MIPS64R3    (CPU_MIPS64R2 | CPU_MIPS32R3 | ISA_MIPS64R3)
+#define CPU_MIPS64R3    (CPU_MIPS64R2 | CPU_MIPS32R3)
 
 /* MIPS Technologies "Release 5" */
 #define CPU_MIPS32R5    (CPU_MIPS32R3 | ISA_MIPS32R5)