diff --git a/pandatool/src/pstatserver/pStatPianoRoll.cxx b/pandatool/src/pstatserver/pStatPianoRoll.cxx
index 68309ee7eb..8d02f6a0b8 100644
--- a/pandatool/src/pstatserver/pStatPianoRoll.cxx
+++ b/pandatool/src/pstatserver/pStatPianoRoll.cxx
@@ -265,9 +265,9 @@ idle() {
 
 // STL function object for sorting labels in order by the collector's
 // sort index, used in compute_page(), below.
-class SortCollectorLabels {
+class SortCollectorLabels1 {
 public:
-  SortCollectorLabels(const PStatClientData *client_data) :
+  SortCollectorLabels1(const PStatClientData *client_data) :
     _client_data(client_data) {
   }
   bool operator () (int a, int b) const {
@@ -315,7 +315,7 @@ compute_page(const PStatFrameData &frame_data) {
       }
     }
 
-    SortCollectorLabels sort_labels(client_data);
+    SortCollectorLabels1 sort_labels(client_data);
     sort(_labels.begin(), _labels.end(), sort_labels);
 
     _labels_changed = true;
diff --git a/pandatool/src/pstatserver/pStatStripChart.cxx b/pandatool/src/pstatserver/pStatStripChart.cxx
index b3364d36c8..2106fe71d1 100644
--- a/pandatool/src/pstatserver/pStatStripChart.cxx
+++ b/pandatool/src/pstatserver/pStatStripChart.cxx
@@ -439,9 +439,9 @@ idle() {
 
 // STL function object for sorting labels in order by the collector's
 // sort index, used in update_labels(), below.
-class SortCollectorLabels {
+class SortCollectorLabels2 {
 public:
-  SortCollectorLabels(const PStatClientData *client_data) :
+  SortCollectorLabels2(const PStatClientData *client_data) :
     _client_data(client_data) {
   }
   bool operator () (int a, int b) const {
@@ -469,7 +469,7 @@ update_labels() {
     _labels.push_back(collector);
   }
 
-  SortCollectorLabels sort_labels(get_monitor()->get_client_data());
+  SortCollectorLabels2 sort_labels(get_monitor()->get_client_data());
   sort(_labels.begin(), _labels.end(), sort_labels);
 
   int collector = level->get_collector();