diff --git a/src/egl/main/egldevice.h b/src/egl/main/egldevice.h
index ddcdcd17f5a..83a47d5eacc 100644
--- a/src/egl/main/egldevice.h
+++ b/src/egl/main/egldevice.h
@@ -31,9 +31,9 @@
 
 
 #include <stdbool.h>
+#include <stddef.h>
 #include "egltypedefs.h"
 
-
 #ifdef __cplusplus
 extern "C" {
 #endif