diff --git a/include/freetype/internal/ftgloadr.h b/include/freetype/internal/ftgloadr.h
index 76ed57331..fea931c3a 100644
--- a/include/freetype/internal/ftgloadr.h
+++ b/include/freetype/internal/ftgloadr.h
@@ -22,6 +22,7 @@
 
 #include <freetype/freetype.h>
 
+#include "compiler-macros.h"
 
 FT_BEGIN_HEADER