diff --git a/src/plugins/python/pythonrunconfiguration.cpp b/src/plugins/python/pythonrunconfiguration.cpp
index e8f6719a0ab..cfd7ceb01f9 100644
--- a/src/plugins/python/pythonrunconfiguration.cpp
+++ b/src/plugins/python/pythonrunconfiguration.cpp
@@ -96,7 +96,7 @@ private:
 
     const QRegularExpression filePattern;
     QList<Task> m_tasks;
-    bool m_inTraceBack;
+    bool m_inTraceBack = false;
 };
 
 // RunConfiguration