1 files changed, 1 insertions, 1 deletions
diff --git a/src/bm/plotter.h b/src/bm/plotter.h
index 789daae..ca15d72 100644
--- a/src/bm/plotter.h
+++ b/src/bm/plotter.h
@@ -84,7 +84,7 @@ private:
     QList<int> timestamps;
     QList<qreal> values;
     QList<int> contributions;
-    int baseTimestamp;
+    mutable int baseTimestamp;
     int baseValuePos;
 
     qreal width;