diff --git a/src/OFString+Cube.h b/src/OFString+Cube.h
index 50c4be0..2d10d4a 100644
--- a/src/OFString+Cube.h
+++ b/src/OFString+Cube.h
@@ -1,6 +1,5 @@
 #import <ObjFW/ObjFW.h>
 
-OF_DIRECT_MEMBERS
 @interface
 OFString (Cube)
 @property (readonly, nonatomic) int cube_intValue;