diff --git a/CMakeLists.txt b/CMakeLists.txt
index 4add686d..0a5af428 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -649,7 +649,7 @@ if(WEBP_BUILD_WEBP_JS)
     set_target_properties(
       webp_js
       PROPERTIES LINK_FLAGS "-sWASM=0 \
-         -sEXPORTED_FUNCTIONS=_WebpToSDL -sINVOKE_RUN=0 \
+         -sEXPORTED_FUNCTIONS=_WebPToSDL -sINVOKE_RUN=0 \
          -sEXPORTED_RUNTIME_METHODS=cwrap")
     set_target_properties(webp_js PROPERTIES OUTPUT_NAME webp)
     target_compile_definitions(webp_js PUBLIC EMSCRIPTEN WEBP_HAVE_SDL)
@@ -662,7 +662,7 @@ if(WEBP_BUILD_WEBP_JS)
   set_target_properties(
     webp_wasm
     PROPERTIES LINK_FLAGS "-sWASM=1 \
-       -sEXPORTED_FUNCTIONS=_WebpToSDL -sINVOKE_RUN=0 \
+       -sEXPORTED_FUNCTIONS=_WebPToSDL -sINVOKE_RUN=0 \
        -sEXPORTED_RUNTIME_METHODS=cwrap")
   target_compile_definitions(webp_wasm PUBLIC EMSCRIPTEN WEBP_HAVE_SDL)
 
diff --git a/extras/vwebp_sdl.c b/extras/vwebp_sdl.c
index 3cf44666..e9554eb1 100644
--- a/extras/vwebp_sdl.c
+++ b/extras/vwebp_sdl.c
@@ -75,7 +75,7 @@ int main(int argc, char* argv[]) {
       fprintf(stderr, "File too large.\n");
       goto Error;
     }
-    ok = WebpToSDL((const char*)webp, (int)webp_size);
+    ok = WebPToSDL((const char*)webp, (int)webp_size);
     free((void*)webp);
     if (!ok) {
       WFPRINTF(stderr, "Error decoding file %s\n", (const W_CHAR*)file);
diff --git a/extras/webp_to_sdl.c b/extras/webp_to_sdl.c
index b13fc928..1e526811 100644
--- a/extras/webp_to_sdl.c
+++ b/extras/webp_to_sdl.c
@@ -29,7 +29,7 @@
 #endif
 
 static int init_ok = 0;
-int WebpToSDL(const char* data, unsigned int data_size) {
+int WebPToSDL(const char* data, unsigned int data_size) {
   int ok = 0;
   VP8StatusCode status;
   WebPDecoderConfig config;
diff --git a/extras/webp_to_sdl.h b/extras/webp_to_sdl.h
index 1b5ea980..1534f2b4 100644
--- a/extras/webp_to_sdl.h
+++ b/extras/webp_to_sdl.h
@@ -14,9 +14,9 @@
 #ifndef WEBP_EXTRAS_WEBP_TO_SDL_H_
 #define WEBP_EXTRAS_WEBP_TO_SDL_H_
 
-// Exports the method WebpToSDL(const char* data, int data_size) which decodes
+// Exports the method WebPToSDL(const char* data, int data_size) which decodes
 // a WebP bitstream into an RGBA SDL surface.
 // Return false on failure.
-extern int WebpToSDL(const char* data, unsigned int data_size);
+extern int WebPToSDL(const char* data, unsigned int data_size);
 
 #endif  // WEBP_EXTRAS_WEBP_TO_SDL_H_
diff --git a/webp_js/index.html b/webp_js/index.html
index 10873a98..33cacb4c 100644
--- a/webp_js/index.html
+++ b/webp_js/index.html
@@ -18,7 +18,7 @@
 var WebpToCanvas;
 
 function init() {
-  WebpToCanvas = Module.cwrap('WebpToSDL', 'number', ['array', 'number']);
+  WebpToCanvas = Module.cwrap('WebPToSDL', 'number', ['array', 'number']);
 }
 window.onload = init;
 
diff --git a/webp_js/index_wasm.html b/webp_js/index_wasm.html
index b77c22c4..5d7c17e8 100644
--- a/webp_js/index_wasm.html
+++ b/webp_js/index_wasm.html
@@ -34,7 +34,7 @@ function decode(webp_data, canvas_id) {
   var result;
   if (Module["asm"] != undefined) {
     // wrapper for the function decoding a WebP into a canvas object
-    WebpToCanvas = Module.cwrap('WebpToSDL', 'number', ['array', 'number']);
+    WebpToCanvas = Module.cwrap('WebPToSDL', 'number', ['array', 'number']);
     // get the canvas to decode into
     var canvas = document.getElementById(canvas_id);
     if (canvas == null) return;