diff --git a/src/dsp/lossless.c b/src/dsp/lossless.c
index 9f812094..e7cbfd9e 100644
--- a/src/dsp/lossless.c
+++ b/src/dsp/lossless.c
@@ -107,14 +107,14 @@ static WEBP_INLINE uint32_t Select(uint32_t a, uint32_t b, uint32_t c) {
 //------------------------------------------------------------------------------
 // Predictors
 
-uint32_t VP8LPredictor0_C(const uint32_t* const left,
-                          const uint32_t* const top) {
+static uint32_t VP8LPredictor0_C(const uint32_t* const left,
+                                 const uint32_t* const top) {
   (void)top;
   (void)left;
   return ARGB_BLACK;
 }
-uint32_t VP8LPredictor1_C(const uint32_t* const left,
-                          const uint32_t* const top) {
+static uint32_t VP8LPredictor1_C(const uint32_t* const left,
+                                 const uint32_t* const top) {
   (void)top;
   return *left;
 }
diff --git a/src/dsp/lossless.h b/src/dsp/lossless.h
index e350e4ca..037a2386 100644
--- a/src/dsp/lossless.h
+++ b/src/dsp/lossless.h
@@ -32,10 +32,6 @@ typedef uint32_t (*VP8LPredictorFunc)(const uint32_t* const left,
                                       const uint32_t* const top);
 extern VP8LPredictorFunc VP8LPredictors[16];
 
-uint32_t VP8LPredictor0_C(const uint32_t* const left,
-                          const uint32_t* const top);
-uint32_t VP8LPredictor1_C(const uint32_t* const left,
-                          const uint32_t* const top);
 uint32_t VP8LPredictor2_C(const uint32_t* const left,
                           const uint32_t* const top);
 uint32_t VP8LPredictor3_C(const uint32_t* const left,