diff --git a/qrenderdoc/Windows/PerformanceCounterViewer.cpp b/qrenderdoc/Windows/PerformanceCounterViewer.cpp
index 6bd5ca2a7..2e077975c 100644
--- a/qrenderdoc/Windows/PerformanceCounterViewer.cpp
+++ b/qrenderdoc/Windows/PerformanceCounterViewer.cpp
@@ -230,7 +230,7 @@ void PerformanceCounterViewer::CaptureCounters()
       {
         if(eventIdToRow.contains(result.eventId))
           continue;
-        eventIdToRow[result.eventId] = eventIdToRow.size();
+        eventIdToRow.insert(result.eventId, eventIdToRow.size());
       }
 
       ui->counterResults->setColumnCount(headers.size());