diff --git a/libavutil/x86/x86inc.asm b/libavutil/x86/x86inc.asm
index fa6a6ab42a..33b22cd45d 100644
--- a/libavutil/x86/x86inc.asm
+++ b/libavutil/x86/x86inc.asm
@@ -871,7 +871,7 @@ SECTION .note.GNU-stack noalloc noexec nowrite progbits
     %assign %%i 0
     %rep num_mmregs
     CAT_XDEFINE m, %%i, ymm %+ %%i
-    CAT_XDEFINE nymm, %%i, %%i
+    CAT_XDEFINE nnymm, %%i, %%i
     %assign %%i %%i+1
     %endrep
     INIT_CPUFLAGS %1