diff --git a/api/builtins/NamespaceTransformer.go b/api/builtins/NamespaceTransformer.go
index 9bfa3eca8..d4c701963 100644
--- a/api/builtins/NamespaceTransformer.go
+++ b/api/builtins/NamespaceTransformer.go
@@ -52,7 +52,7 @@ func (p *NamespaceTransformerPlugin) Transform(m resmap.ResMap) error {
 
 		matches := m.GetMatchingResourcesByCurrentId(r.CurId().Equals)
 		if len(matches) != 1 {
-			return fmt.Errorf("namespace tranformation produces ID conflict: %#v", matches)
+			return fmt.Errorf("namespace tranformation produces ID conflict: %+v", matches)
 		}
 	}
 	return nil
diff --git a/plugin/builtin/namespacetransformer/NamespaceTransformer.go b/plugin/builtin/namespacetransformer/NamespaceTransformer.go
index b8e33f9d1..dd2540a60 100644
--- a/plugin/builtin/namespacetransformer/NamespaceTransformer.go
+++ b/plugin/builtin/namespacetransformer/NamespaceTransformer.go
@@ -56,7 +56,7 @@ func (p *plugin) Transform(m resmap.ResMap) error {
 
 		matches := m.GetMatchingResourcesByCurrentId(r.CurId().Equals)
 		if len(matches) != 1 {
-			return fmt.Errorf("namespace tranformation produces ID conflict: %#v", matches)
+			return fmt.Errorf("namespace tranformation produces ID conflict: %+v", matches)
 		}
 	}
 	return nil