diff --git a/libswscale/swscale.c b/libswscale/swscale.c
index 6e47a92ac7..91bfe180a9 100644
--- a/libswscale/swscale.c
+++ b/libswscale/swscale.c
@@ -522,7 +522,7 @@ static int swscale(SwsContext *c, const uint8_t *src[],
             break;  // we can't output a dstY line so let's try with the next slice
 
 #if HAVE_MMX_INLINE
-        updateMMXDitherTables(c, dstY, lumBufIndex, chrBufIndex,
+        ff_updateMMXDitherTables(c, dstY, lumBufIndex, chrBufIndex,
                               lastInLumBuf, lastInChrBuf);
 #endif
         if (should_dither) {
diff --git a/libswscale/swscale_internal.h b/libswscale/swscale_internal.h
index 37c2b37548..55f683f5be 100644
--- a/libswscale/swscale_internal.h
+++ b/libswscale/swscale_internal.h
@@ -613,7 +613,7 @@ int ff_yuv2rgb_c_init_tables(SwsContext *c, const int inv_table[4],
 void ff_yuv2rgb_init_tables_ppc(SwsContext *c, const int inv_table[4],
                                 int brightness, int contrast, int saturation);
 
-void updateMMXDitherTables(SwsContext *c, int dstY, int lumBufIndex, int chrBufIndex,
+void ff_updateMMXDitherTables(SwsContext *c, int dstY, int lumBufIndex, int chrBufIndex,
                            int lastInLumBuf, int lastInChrBuf);
 
 av_cold void ff_sws_init_range_convert(SwsContext *c);
diff --git a/libswscale/x86/swscale.c b/libswscale/x86/swscale.c
index fe5c4eaec7..a06d1f2102 100644
--- a/libswscale/x86/swscale.c
+++ b/libswscale/x86/swscale.c
@@ -80,7 +80,7 @@ DECLARE_ALIGNED(8, const uint64_t, ff_w1111)        = 0x0001000100010001ULL;
 #include "swscale_template.c"
 #endif
 
-void updateMMXDitherTables(SwsContext *c, int dstY, int lumBufIndex, int chrBufIndex,
+void ff_updateMMXDitherTables(SwsContext *c, int dstY, int lumBufIndex, int chrBufIndex,
                            int lastInLumBuf, int lastInChrBuf)
 {
     const int dstH= c->dstH;