diff --git a/libavcodec/x86/idct_sse2_xvid.c b/libavcodec/x86/idct_sse2_xvid.c
index e1878fa93d..6dd2cb2168 100644
--- a/libavcodec/x86/idct_sse2_xvid.c
+++ b/libavcodec/x86/idct_sse2_xvid.c
@@ -343,7 +343,7 @@ DECLARE_ASM_CONST(16, int32_t, walkenIdctRounders)[] = {
     "movdqa   %%xmm6, 4*16("dct")     \n\t" \
     "movdqa   "SREG2", 7*16("dct")    \n\t"
 
-inline void ff_idct_xvid_sse2(short *block)
+av_extern_inline void ff_idct_xvid_sse2(short *block)
 {
     __asm__ volatile(
     "movq     "MANGLE(m127)", %%mm0                              \n\t"