diff --git a/src/renderer.cpp b/src/renderer.cpp
index 4fe7505..b27dbe2 100644
--- a/src/renderer.cpp
+++ b/src/renderer.cpp
@@ -1,6 +1,7 @@
 #include "renderer.h"
 #include <SDL3/SDL.h>
 #include <algorithm>
+#include <cstddef>
 #include <cstring>
 
 #define GL_GLEXT_PROTOTYPES