diff --git a/libavutil/x86/x86util.asm b/libavutil/x86/x86util.asm
index 4c6f4c63ab..761cea0a8e 100644
--- a/libavutil/x86/x86util.asm
+++ b/libavutil/x86/x86util.asm
@@ -23,6 +23,8 @@
 ;* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
 ;******************************************************************************
 
+%define cpuflags_mmxext cpuflags_mmx2
+
 %include "libavutil/x86/x86inc.asm"
 
 %macro SBUTTERFLY 4