1 files changed, 5 insertions, 4 deletions
diff --git a/src/core.c b/src/core.c
index 97d8a74c..c11c69ce 100644
--- a/src/core.c
+++ b/src/core.c
@@ -88,6 +88,11 @@
 
 #include "raylib.h"
 
+#if (defined(__linux__) || defined(PLATFORM_WEB)) && _POSIX_S_SOURCE < 199309L
+    #undef _POSIX_C_SOURCE
+    #define _POSIX_C_SOURCE 199309L // Required for CLOCK_MONOTONIC if compiled with c99 without gnu ext.
+#endif
+
 #include "rlgl.h"           // raylib OpenGL abstraction layer to OpenGL 1.1, 3.3+ or ES2
 #include "utils.h"          // Required for: fopen() Android mapping
 
@@ -110,10 +115,6 @@
     #include "external/rgif.h"   // Support GIF recording
 #endif
 
-#if defined(__linux__) || defined(PLATFORM_WEB)
-    #define _POSIX_C_SOURCE 199309L // Required for CLOCK_MONOTONIC if compiled with c99 without gnu ext.
-#endif
-
 #include <stdio.h>          // Standard input / output lib
 #include <stdlib.h>         // Required for: malloc(), free(), rand(), atexit()
 #include <stdint.h>         // Required for: typedef unsigned long long int uint64_t, used by hi-res timer