diff --git a/sysdeps/mips/machine-gmon.h b/sysdeps/mips/machine-gmon.h
index aac1723ef5..f5d1c64e2c 100644
--- a/sysdeps/mips/machine-gmon.h
+++ b/sysdeps/mips/machine-gmon.h
@@ -83,8 +83,13 @@ static void __attribute_used__ __mcount (u_long frompc, u_long selfpc)
 #endif
 
 #if _MIPS_SIM == _ABIN32
-# define PTR_ADDU_STRING "add" /* no u */
-# define PTR_SUBU_STRING "sub" /* no u */
+# if __mips_isa_rev < 6
+#  define PTR_ADDU_STRING "add" /* no u */
+#  define PTR_SUBU_STRING "sub" /* no u */
+# else
+#  define PTR_ADDU_STRING "addu"
+#  define PTR_SUBU_STRING "subu"
+# endif
 #elif _MIPS_SIM == _ABI64
 # define PTR_ADDU_STRING "daddu"
 # define PTR_SUBU_STRING "dsubu"
diff --git a/sysdeps/mips/sys/asm.h b/sysdeps/mips/sys/asm.h
index e479e9bfa7..a618d4974d 100644
--- a/sysdeps/mips/sys/asm.h
+++ b/sysdeps/mips/sys/asm.h
@@ -416,12 +416,19 @@ symbol		=	value
 #if _MIPS_SIM == _ABIN32
 # define PTR_ADD	add
 # define PTR_ADDI	addi
-# define PTR_ADDU	add /* no u */
-# define PTR_ADDIU	addi /* no u */
 # define PTR_SUB	sub
 # define PTR_SUBI	subi
+#if __mips_isa_rev < 6
+# define PTR_ADDU	add /* no u */
+# define PTR_ADDIU	addi /* no u */
 # define PTR_SUBU	sub /* no u */
 # define PTR_SUBIU	sub /* no u */
+#else
+# define PTR_ADDU       addu
+# define PTR_ADDIU      addiu
+# define PTR_SUBU       subu
+# define PTR_SUBIU      subu
+#endif
 # define PTR_L		lw
 # define PTR_LA		la
 # define PTR_S		sw