From dc5bfbe1c4b038b0e82b7374477e65f3f9dedbe0 Mon Sep 17 00:00:00 2001
From: Max Horn <max@quendi.de>
Date: Wed, 21 Feb 2018 17:14:36 +0100
Subject: [PATCH] Don't rely on hidden impls in certain method installations

---
 lib/ghom.gd     | 2 +-
 lib/grppcatr.gi | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/lib/ghom.gd b/lib/ghom.gd
index 5348737cadd..06fede6b350 100644
--- a/lib/ghom.gd
+++ b/lib/ghom.gd
@@ -273,7 +273,7 @@ InstallAttributeMethodByGroupGeneralMappingByImages :=
             [ IsGroupGeneralMappingByAsGroupGeneralMappingByImages ], 0,
             hom -> attr( AsGroupGeneralMappingByImages( hom ) ) );
     InstallMethod( attr, "get delayed set attribute values", true,
-            [ HasMappingOfWhichItIsAsGGMBI ],
+            [ IsGroupGeneralMapping and HasMappingOfWhichItIsAsGGMBI ],
 	    SUM_FLAGS-1, # we want to do this before doing any calculations
 	    function(hom)
               hom:=MappingOfWhichItIsAsGGMBI( hom );
diff --git a/lib/grppcatr.gi b/lib/grppcatr.gi
index 067c4611e89..cc1f58a6eb4 100644
--- a/lib/grppcatr.gi
+++ b/lib/grppcatr.gi
@@ -675,7 +675,7 @@ end);
 #M  GeneratorsSmallest(<pcgrp>)
 ##
 InstallMethod(GeneratorsSmallest,"group of pc words which is full family",
-  true, [HasFamilyPcgs],0,
+  true, [IsGroup and HasFamilyPcgs],0,
 function(G)
 local pcgs,gens,U,e,i,j,pa,ros,smallpcgs,exp;