diff --git a/src/cocoa_platform.h b/src/cocoa_platform.h
index 05c23b70..405abf9f 100644
--- a/src/cocoa_platform.h
+++ b/src/cocoa_platform.h
@@ -31,7 +31,9 @@
 
 // NOTE: All of NSGL was deprecated in the 10.14 SDK
 //       This disables the pointless warnings for every symbol we use
+#ifndef GL_SILENCE_DEPRECATION
 #define GL_SILENCE_DEPRECATION
+#endif
 
 #if defined(__OBJC__)
 #import <Cocoa/Cocoa.h>