diff --git a/examples/others/rlgl_standalone.c b/examples/others/rlgl_standalone.c
index f02a8b1f..506ddfdb 100644
--- a/examples/others/rlgl_standalone.c
+++ b/examples/others/rlgl_standalone.c
@@ -48,8 +48,8 @@
 #define RLGL_SUPPORT_TRACELOG
 #include "rlgl.h"               // OpenGL 1.1 immediate-mode style coding
 
-#ifdef __EMSCRIPTEN__
-#define GLFW_INCLUDE_ES2
+#if defined(__EMSCRIPTEN__)
+    #define GLFW_INCLUDE_ES2
 #endif
 
 #include <GLFW/glfw3.h>         // Windows/Context and inputs management