diff --git a/libswscale/x86/swscale.c b/libswscale/x86/swscale.c
index a86f9f82f3..2f7e4f717a 100644
--- a/libswscale/x86/swscale.c
+++ b/libswscale/x86/swscale.c
@@ -71,7 +71,7 @@ DECLARE_ALIGNED(8, const uint64_t, ff_w1111)        = 0x0001000100010001ULL;
 #if HAVE_MMX_INLINE
 #undef RENAME
 #define COMPILE_TEMPLATE_MMXEXT 0
-#define RENAME(a) a ## _MMX
+#define RENAME(a) a ## _mmx
 #include "swscale_template.c"
 #endif
 
@@ -80,7 +80,7 @@ DECLARE_ALIGNED(8, const uint64_t, ff_w1111)        = 0x0001000100010001ULL;
 #undef RENAME
 #undef COMPILE_TEMPLATE_MMXEXT
 #define COMPILE_TEMPLATE_MMXEXT 1
-#define RENAME(a) a ## _MMXEXT
+#define RENAME(a) a ## _mmxext
 #include "swscale_template.c"
 #endif
 
@@ -206,7 +206,7 @@ static void yuv2yuvX_sse3(const int16_t *filter, int filterSize,
                            const uint8_t *dither, int offset)
 {
     if(((int)dest) & 15){
-        return yuv2yuvX_MMXEXT(filter, filterSize, src, dest, dstW, dither, offset);
+        return yuv2yuvX_mmxext(filter, filterSize, src, dest, dstW, dither, offset);
     }
     if (offset) {
         __asm__ volatile("movq       (%0), %%xmm3\n\t"
@@ -383,11 +383,11 @@ av_cold void ff_sws_init_swscale_x86(SwsContext *c)
 
 #if HAVE_MMX_INLINE
     if (cpu_flags & AV_CPU_FLAG_MMX)
-        sws_init_swscale_MMX(c);
+        sws_init_swscale_mmx(c);
 #endif
 #if HAVE_MMXEXT_INLINE
     if (cpu_flags & AV_CPU_FLAG_MMXEXT)
-        sws_init_swscale_MMXEXT(c);
+        sws_init_swscale_mmxext(c);
     if (cpu_flags & AV_CPU_FLAG_SSE3){
         if(c->use_mmx_vfilter && !(c->flags & SWS_ACCURATE_RND))
             c->yuv2planeX = yuv2yuvX_sse3;
diff --git a/libswscale/x86/yuv2rgb.c b/libswscale/x86/yuv2rgb.c
index a54b84aae7..e4315eff28 100644
--- a/libswscale/x86/yuv2rgb.c
+++ b/libswscale/x86/yuv2rgb.c
@@ -53,7 +53,7 @@ DECLARE_ASM_CONST(8, uint64_t, pb_07) = 0x0707070707070707ULL;
 #undef RENAME
 #undef COMPILE_TEMPLATE_MMXEXT
 #define COMPILE_TEMPLATE_MMXEXT 0
-#define RENAME(a) a ## _MMX
+#define RENAME(a) a ## _mmx
 #include "yuv2rgb_template.c"
 #endif /* HAVE_MMX_INLINE */
 
@@ -62,7 +62,7 @@ DECLARE_ASM_CONST(8, uint64_t, pb_07) = 0x0707070707070707ULL;
 #undef RENAME
 #undef COMPILE_TEMPLATE_MMXEXT
 #define COMPILE_TEMPLATE_MMXEXT 1
-#define RENAME(a) a ## _MMXEXT
+#define RENAME(a) a ## _mmxext
 #include "yuv2rgb_template.c"
 #endif /* HAVE_MMXEXT_INLINE */
 
@@ -77,9 +77,9 @@ av_cold SwsFunc ff_yuv2rgb_init_x86(SwsContext *c)
     if (cpu_flags & AV_CPU_FLAG_MMXEXT) {
         switch (c->dstFormat) {
         case AV_PIX_FMT_RGB24:
-            return yuv420_rgb24_MMXEXT;
+            return yuv420_rgb24_mmxext;
         case AV_PIX_FMT_BGR24:
-            return yuv420_bgr24_MMXEXT;
+            return yuv420_bgr24_mmxext;
         }
     }
 #endif
@@ -89,21 +89,27 @@ av_cold SwsFunc ff_yuv2rgb_init_x86(SwsContext *c)
             case AV_PIX_FMT_RGB32:
                 if (c->srcFormat == AV_PIX_FMT_YUVA420P) {
 #if HAVE_7REGS && CONFIG_SWSCALE_ALPHA
-                    return yuva420_rgb32_MMX;
+                    return yuva420_rgb32_mmx;
 #endif
                     break;
-                } else return yuv420_rgb32_MMX;
+                } else
+                    return yuv420_rgb32_mmx;
             case AV_PIX_FMT_BGR32:
                 if (c->srcFormat == AV_PIX_FMT_YUVA420P) {
 #if HAVE_7REGS && CONFIG_SWSCALE_ALPHA
-                    return yuva420_bgr32_MMX;
+                    return yuva420_bgr32_mmx;
 #endif
                     break;
-                } else return yuv420_bgr32_MMX;
-            case AV_PIX_FMT_RGB24:  return yuv420_rgb24_MMX;
-            case AV_PIX_FMT_BGR24:  return yuv420_bgr24_MMX;
-            case AV_PIX_FMT_RGB565: return yuv420_rgb16_MMX;
-            case AV_PIX_FMT_RGB555: return yuv420_rgb15_MMX;
+                } else
+                    return yuv420_bgr32_mmx;
+            case AV_PIX_FMT_RGB24:
+                return yuv420_rgb24_mmx;
+            case AV_PIX_FMT_BGR24:
+                return yuv420_bgr24_mmx;
+            case AV_PIX_FMT_RGB565:
+                return yuv420_rgb16_mmx;
+            case AV_PIX_FMT_RGB555:
+                return yuv420_rgb15_mmx;
         }
     }
 #endif /* HAVE_MMX_INLINE */