diff --git a/DRAMSys/analyzer/presentation/tracePlotMouseLabel.cpp b/DRAMSys/analyzer/presentation/tracePlotMouseLabel.cpp
index 863a0171..1e072bc4 100644
--- a/DRAMSys/analyzer/presentation/tracePlotMouseLabel.cpp
+++ b/DRAMSys/analyzer/presentation/tracePlotMouseLabel.cpp
@@ -58,4 +58,5 @@ QwtText TracePlotMouseLabel::trackerText(const QPoint &point) const
     {
         Q_ASSERT(false);
     }
+    return QwtText(QString(""));
 }