diff --git a/engines/agos/agos.h b/engines/agos/agos.h
index b1d2e6d7352..359dfd5ff1e 100644
--- a/engines/agos/agos.h
+++ b/engines/agos/agos.h
@@ -56,7 +56,7 @@ class SeekableReadStream;
 }
 
 namespace Graphics {
-class Surface;
+struct Surface;
 }
 
 namespace AGOS {