diff --git a/libavutil/x86/x86util.asm b/libavutil/x86/x86util.asm
index de7d2d11c1..fe9a727e22 100644
--- a/libavutil/x86/x86util.asm
+++ b/libavutil/x86/x86util.asm
@@ -833,7 +833,9 @@
 %if cpuflag(avx)
     vbroadcastss %1, %2
 %else ; sse
+%ifnidn %1, %2
     movss        %1, %2
+%endif
     shufps       %1, %1, 0
 %endif
 %endmacro