Index: libcfa/src/bits/containers.hfa
===================================================================
--- libcfa/src/bits/containers.hfa	(revision 7812a7b58de49d3c24921120d935d3f6008cfc21)
+++ libcfa/src/bits/containers.hfa	(revision 15806ed4125985b4bd7172dc59af8da70529cd89)
@@ -194,5 +194,5 @@
 
 		int ?!=?( const __queue(T) & this, __attribute__((unused)) zero_t zero ) {
-			return this.head != 0;
+			return this.head != 1p;
 		}
 	}