diff --git a/libavcodec/x86/vc1dsp.h b/libavcodec/x86/vc1dsp.h
index 6185407b18..9c16d73fd2 100644
--- a/libavcodec/x86/vc1dsp.h
+++ b/libavcodec/x86/vc1dsp.h
@@ -21,6 +21,7 @@
 #ifndef AVCODEC_X86_VC1DSP_H
 #define AVCODEC_X86_VC1DSP_H
 
+#include "libavutil/x86/asm.h"
 #include "libavcodec/vc1dsp.h"
 
 #if HAVE_6REGS && HAVE_INLINE_ASM && HAVE_MMX_EXTERNAL