diff --git a/libavcodec/Makefile b/libavcodec/Makefile
index 914dd4af41..58a0274aac 100644
--- a/libavcodec/Makefile
+++ b/libavcodec/Makefile
@@ -25,7 +25,7 @@ endif
 
 # i386 mmx specific stuff
 ifeq ($(TARGET_MMX),yes)
-ASM_OBJS += i386/fdct_mmx.o i386/sad_mmx.o
+ASM_OBJS += i386/fdct_mmx.o i386/sad_mmx.o i386/cpuid.o
 OBJS += i386/fdctdata.o i386/cputest.o \
 	i386/dsputil_mmx.o i386/mpegvideo_mmx.o
 endif
@@ -46,6 +46,9 @@ dsputil.o: dsputil.c dsputil.h
 %.o: %.c
 	$(CC) $(CFLAGS) -c -o $@ $< 
 
+i386/cpuid.o: i386/cpuid.s
+	$(CC) -c -o $@ $< 
+
 %.o: %.s
 	nasm -f elf -o $@ $<