diff --git a/vp9/encoder/vp9_denoiser.c b/vp9/encoder/vp9_denoiser.c
index f1d7379..1f9a28c 100644
--- a/vp9/encoder/vp9_denoiser.c
+++ b/vp9/encoder/vp9_denoiser.c
@@ -63,10 +63,6 @@
   }
 }
 
-int total_adj_strong_thresh(BLOCK_SIZE bs, int increase_denoising) {
-  return (1 << num_pels_log2_lookup[bs]) * (increase_denoising ? 3 : 2);
-}
-
 static int total_adj_weak_thresh(BLOCK_SIZE bs, int increase_denoising) {
   return (1 << num_pels_log2_lookup[bs]) * (increase_denoising ? 3 : 2);
 }
diff --git a/vp9/encoder/vp9_denoiser.h b/vp9/encoder/vp9_denoiser.h
index 8eb5da1..b2af792 100644
--- a/vp9/encoder/vp9_denoiser.h
+++ b/vp9/encoder/vp9_denoiser.h
@@ -57,7 +57,12 @@
                        int border);
 
 #if CONFIG_VP9_TEMPORAL_DENOISING
-int total_adj_strong_thresh(BLOCK_SIZE bs, int increase_denoising);
+// This function is used by both c and sse2 denoiser implementations.
+// Define it as a static function within the scope where vp9_denoiser.h
+// is referenced.
+static int total_adj_strong_thresh(BLOCK_SIZE bs, int increase_denoising) {
+  return (1 << num_pels_log2_lookup[bs]) * (increase_denoising ? 3 : 2);
+}
 #endif
 
 void vp9_denoiser_free(VP9_DENOISER *denoiser);