diff --git a/src/main.h b/src/main.h
index b691b2c..fd4e7f0 100644
--- a/src/main.h
+++ b/src/main.h
@@ -4,7 +4,7 @@
 # include <glib.h>
 
 extern GMainContext *game_context;
-extern gulong elapsed_seconds;
+extern guint32 elapsed_seconds;
 
 #endif /* __WMUD_MAIN_H__ */