diff --git a/vp9/encoder/vp9_sad_c.c b/vp9/encoder/vp9_sad.c
similarity index 100%
rename from vp9/encoder/vp9_sad_c.c
rename to vp9/encoder/vp9_sad.c
diff --git a/vp9/vp9cx.mk b/vp9/vp9cx.mk
index 131d6c77f..c225f54b8 100644
--- a/vp9/vp9cx.mk
+++ b/vp9/vp9cx.mk
@@ -56,7 +56,7 @@ VP9_CX_SRCS-yes += encoder/vp9_quantize.c
 VP9_CX_SRCS-yes += encoder/vp9_ratectrl.c
 VP9_CX_SRCS-yes += encoder/vp9_rdopt.c
 VP9_CX_SRCS-yes += encoder/vp9_pickmode.c
-VP9_CX_SRCS-yes += encoder/vp9_sad_c.c
+VP9_CX_SRCS-yes += encoder/vp9_sad.c
 VP9_CX_SRCS-yes += encoder/vp9_segmentation.c
 VP9_CX_SRCS-yes += encoder/vp9_segmentation.h
 VP9_CX_SRCS-yes += encoder/vp9_subexp.c