diff --git a/examples/C99/HelloTriangle/HelloTriangle.c b/examples/C99/HelloTriangle/HelloTriangle.c
index b868e5ed92..8d3ed418fa 100644
--- a/examples/C99/HelloTriangle/HelloTriangle.c
+++ b/examples/C99/HelloTriangle/HelloTriangle.c
@@ -163,7 +163,7 @@ int main(int argc, char* argv[])
     };
 
     // Enter main loop
-    while (llglProcessSurfaceEvents(surface) && !llglHasWindowQuit(window))
+    while (llglProcessSurfaceEvents() && !llglHasWindowQuit(window))
     {
         // Begin recording commands
         llglBegin(cmdBuffer);
diff --git a/sources/Renderer/OpenGL/OpenGL.h b/sources/Renderer/OpenGL/OpenGL.h
index f5d7740b11..02a7607448 100644
--- a/sources/Renderer/OpenGL/OpenGL.h
+++ b/sources/Renderer/OpenGL/OpenGL.h
@@ -22,7 +22,7 @@
 
 #if LLGL_WEBGL
 
-#define LLGL_GLEXT_TRANSFORM_FEEDBACK
+#define LLGL_GLEXT_TRANSFORM_FEEDBACK 1
 
 #else // LLGL_WEBGL