diff --git a/source/niknaks/containers.d b/source/niknaks/containers.d
index ea62008..2513929 100644
--- a/source/niknaks/containers.d
+++ b/source/niknaks/containers.d
@@ -706,6 +706,10 @@ if(isSector!(SectorType)())
                 thunk += sector.opDollar();
             }
         }
+
+        // NOTE: This should be unreachable but
+        // compiler moans and groans
+        assert(false);
     }
 
     public void opIndexAssign(T value, size_t idx)