not an invariant
diff --git a/skeletons/per_opentype.c b/skeletons/per_opentype.c
index f2cac93..4d624f0 100644
--- a/skeletons/per_opentype.c
+++ b/skeletons/per_opentype.c
@@ -133,6 +133,7 @@
 		}
 	}
 
+	if(0)	/* Special debugging assert */
 	assert(pd->moved == pd->nboff + ((((int)pd->buffer) & 0x7) << 3));
 
 	if(arg.repeat) {