diff --git a/pkg/frontend/frontend_select_merge_span_profile.go b/pkg/frontend/frontend_select_merge_span_profile.go
index 028977844e..9648907df1 100644
--- a/pkg/frontend/frontend_select_merge_span_profile.go
+++ b/pkg/frontend/frontend_select_merge_span_profile.go
@@ -83,7 +83,6 @@ func (f *Frontend) SelectMergeSpanProfile(ctx context.Context,
 	}
 
 	t := m.Tree()
-	t.FormatNodeNames(phlaremodel.DropGoTypeParameters)
 	return connect.NewResponse(&querierv1.SelectMergeSpanProfileResponse{
 		Flamegraph: phlaremodel.NewFlameGraph(t, c.Msg.GetMaxNodes()),
 	}), nil
diff --git a/pkg/frontend/frontend_select_merge_stacktraces.go b/pkg/frontend/frontend_select_merge_stacktraces.go
index 926448ecca..cdaeff8cbc 100644
--- a/pkg/frontend/frontend_select_merge_stacktraces.go
+++ b/pkg/frontend/frontend_select_merge_stacktraces.go
@@ -82,7 +82,6 @@ func (f *Frontend) SelectMergeStacktraces(ctx context.Context,
 	}
 
 	t := m.Tree()
-	t.FormatNodeNames(phlaremodel.DropGoTypeParameters)
 	return connect.NewResponse(&querierv1.SelectMergeStacktracesResponse{
 		Flamegraph: phlaremodel.NewFlameGraph(t, c.Msg.GetMaxNodes()),
 	}), nil