diff --git a/lib/matobjplist.gi b/lib/matobjplist.gi
index 7409436232..dcc5df6bc4 100644
--- a/lib/matobjplist.gi
+++ b/lib/matobjplist.gi
@@ -21,6 +21,7 @@
 InstallGlobalFunction( MakePlistVectorType,
   function( basedomain, filter )
     local T, filter2;
+    filter := filtr and IsNoImmediateMethodsObject;
     filter2 := filter and IsMutable;
     if HasCanEasilyCompareElements(Representative(basedomain)) and
        CanEasilyCompareElements(Representative(basedomain)) then