diff --git a/gdk/gdktoplevellayout.h b/gdk/gdktoplevellayout.h
index 23b2660414..62f2790f75 100644
--- a/gdk/gdktoplevellayout.h
+++ b/gdk/gdktoplevellayout.h
@@ -30,7 +30,7 @@
 G_BEGIN_DECLS
 
 /**
- * GdkTopLevelLayout:
+ * GdkToplevelLayout:
  *
  * Struct containing information for gdk_toplevel_present()
  */