diff --git a/PPI/MultiConnectorMixin.hh b/PPI/MultiConnectorMixin.hh
index 7052d657eeb0c62f9b6357ac9d159b0c278fed80..e63d7ff3e990f7dfa24dd0255a2966a8cfad2fcd 100644
--- a/PPI/MultiConnectorMixin.hh
+++ b/PPI/MultiConnectorMixin.hh
@@ -208,7 +208,7 @@ namespace module {
         ContainerType_ const & connectors() const; ///< Get connectors container (const)
 
     private:
-#ifdef 0
+#if 0
         // For exposition only
         // Other implementations with 0..SENF_MULTI_CONNECTOR_MAX_ARGS arguments accordingly