diff --git a/src/plugins/debugger/debuggerengine.h b/src/plugins/debugger/debuggerengine.h
index 6e0ed670f51..ea69d5c4566 100644
--- a/src/plugins/debugger/debuggerengine.h
+++ b/src/plugins/debugger/debuggerengine.h
@@ -250,7 +250,7 @@ public:
     virtual bool canDisplayTooltip() const { return state() == InferiorStopOk; }
 
 signals:
-    void stateChanged(const DebuggerState &state);
+    void stateChanged(const Debugger::DebuggerState &state);
     void updateViewsRequested();
     /*
      * For "external" clients of a debugger run control that needs to do
diff --git a/src/plugins/debugger/lldb/ipcenginehost.cpp b/src/plugins/debugger/lldb/ipcenginehost.cpp
index 0667c590b2d..9b96a263efd 100644
--- a/src/plugins/debugger/lldb/ipcenginehost.cpp
+++ b/src/plugins/debugger/lldb/ipcenginehost.cpp
@@ -73,7 +73,7 @@ IPCEngineHost::IPCEngineHost (const DebuggerStartParameters &startParameters)
     , m_cookie(1)
     , m_device(0)
 {
-    connect(this, SIGNAL(stateChanged(DebuggerState)), SLOT(m_stateChanged(DebuggerState)));
+    connect(this, SIGNAL(stateChanged(Debugger::DebuggerState)), SLOT(m_stateChanged(Debugger::DebuggerState)));
 }
 
 IPCEngineHost::~IPCEngineHost()
@@ -583,7 +583,7 @@ void IPCEngineHost::rpcCallback(quint64 f, QByteArray payload)
     }
 }
 
-void IPCEngineHost::m_stateChanged(const DebuggerState &state)
+void IPCEngineHost::m_stateChanged(const Debugger::DebuggerState &state)
 {
     QByteArray p;
     {