diff --git a/src/plugins/debugger/debuggerengine.cpp b/src/plugins/debugger/debuggerengine.cpp
index b151f73f7d0..aed919bcbf7 100644
--- a/src/plugins/debugger/debuggerengine.cpp
+++ b/src/plugins/debugger/debuggerengine.cpp
@@ -168,6 +168,7 @@ public:
         m_state(DebuggerNotReady),
         m_lastGoodState(DebuggerNotReady),
         m_targetState(DebuggerNotReady),
+        m_inferiorPid(0),
         m_modulesHandler(),
         m_registerHandler(),
         m_sourceFilesHandler(),