diff --git a/src/plugins/debugger/cdb/cdbengine.cpp b/src/plugins/debugger/cdb/cdbengine.cpp
index 343967874cc229009f0a4e4471b67acc91043a3d..1904c20f5787c96c13f5875db0ca4825cb19f64c 100644
--- a/src/plugins/debugger/cdb/cdbengine.cpp
+++ b/src/plugins/debugger/cdb/cdbengine.cpp
@@ -428,7 +428,7 @@ static inline Utils::SavedAction *theAssemblerAction()
 
 CdbEngine::CdbEngine(const DebuggerStartParameters &sp,
         DebuggerEngine *masterEngine, const OptionsPtr &options) :
-    DebuggerEngine(sp, CppLanguage, masterEngine),
+    DebuggerEngine(sp, masterEngine),
     m_creatorExtPrefix("<qtcreatorcdbext>|"),
     m_tokenPrefix("<token>"),
     m_options(options),
diff --git a/src/plugins/debugger/debuggerengine.cpp b/src/plugins/debugger/debuggerengine.cpp
index 969474966bf22fcd054d59fcbe87ed9097af0175..4c4021ecd37ed5e877574a1e7d874f7dc7710618 100644
--- a/src/plugins/debugger/debuggerengine.cpp
+++ b/src/plugins/debugger/debuggerengine.cpp
@@ -155,13 +155,11 @@ class DebuggerEnginePrivate : public QObject
 public:
     DebuggerEnginePrivate(DebuggerEngine *engine,
             DebuggerEngine *masterEngine,
-            DebuggerLanguages languages,
             const DebuggerStartParameters &sp)
       : m_engine(engine),
         m_masterEngine(masterEngine),
         m_runControl(0),
         m_startParameters(sp),
-        m_languages(languages),
         m_state(DebuggerNotReady),
         m_lastGoodState(DebuggerNotReady),
         m_targetState(DebuggerNotReady),
@@ -183,8 +181,6 @@ public:
         connect(&m_locationTimer, SIGNAL(timeout()), SLOT(resetLocation()));
     }
 
-    ~DebuggerEnginePrivate() {}
-
 public slots:
     void doSetupEngine();
     void doSetupInferior();
@@ -282,7 +278,6 @@ public:
     DebuggerRunControl *m_runControl;  // Not owned.
 
     DebuggerStartParameters m_startParameters;
-    DebuggerLanguages m_languages;
 
     // The current state.
     DebuggerState m_state;
@@ -336,12 +331,9 @@ public:
 //////////////////////////////////////////////////////////////////////
 
 DebuggerEngine::DebuggerEngine(const DebuggerStartParameters &startParameters,
-        DebuggerLanguages languages,
         DebuggerEngine *parentEngine)
-  : d(new DebuggerEnginePrivate(this, parentEngine, languages, startParameters))
-{
-    d->m_inferiorPid = 0;
-}
+  : d(new DebuggerEnginePrivate(this, parentEngine, startParameters))
+{}
 
 DebuggerEngine::~DebuggerEngine()
 {
@@ -1277,11 +1269,6 @@ DebuggerEngine *DebuggerEngine::masterEngine() const
     return d->m_masterEngine;
 }
 
-DebuggerLanguages DebuggerEngine::languages() const
-{
-    return d->m_languages;
-}
-
 QString DebuggerEngine::toFileInProject(const QUrl &fileUrl)
 {
     // make sure file finder is properly initialized
diff --git a/src/plugins/debugger/debuggerengine.h b/src/plugins/debugger/debuggerengine.h
index 2b7fdbdc0e3948a45595d78abb58d5aa86d8f163..b87c7b5f6efe7b2c5c59adfe236d4ccf7185c37f 100644
--- a/src/plugins/debugger/debuggerengine.h
+++ b/src/plugins/debugger/debuggerengine.h
@@ -140,7 +140,6 @@ class DEBUGGER_EXPORT DebuggerEngine : public QObject
 
 public:
     explicit DebuggerEngine(const DebuggerStartParameters &sp,
-        DebuggerLanguages languages,
         DebuggerEngine *parentEngine = 0);
     virtual ~DebuggerEngine();
 
@@ -266,8 +265,6 @@ public:
     bool isMasterEngine() const;
     DebuggerEngine *masterEngine() const;
 
-    DebuggerLanguages languages() const;
-
     virtual bool setupQmlStep(bool /*on*/) { return false; }
     virtual void readyToExecuteQmlStep() {}
 
diff --git a/src/plugins/debugger/debuggerplugin.cpp b/src/plugins/debugger/debuggerplugin.cpp
index 0fe1bf0e5fda19d872a0a7479d18cb79237214e6..b6c6ea574596e7b7a814039212267deb998e77e5 100644
--- a/src/plugins/debugger/debuggerplugin.cpp
+++ b/src/plugins/debugger/debuggerplugin.cpp
@@ -479,7 +479,7 @@ class DummyEngine : public DebuggerEngine
     Q_OBJECT
 
 public:
-    DummyEngine() : DebuggerEngine(DebuggerStartParameters(), AnyLanguage) {}
+    DummyEngine() : DebuggerEngine(DebuggerStartParameters()) {}
     ~DummyEngine() {}
 
     void setupEngine() {}
@@ -2002,7 +2002,7 @@ void DebuggerPluginPrivate::connectEngine(DebuggerEngine *engine)
 
     engine->watchHandler()->rebuildModel();
 
-    mainWindow()->setEngineDebugLanguages(engine->languages());
+    mainWindow()->setEngineDebugLanguages(engine->startParameters().languages);
     mainWindow()->setCurrentEngine(engine);
 }
 
diff --git a/src/plugins/debugger/gdb/gdbengine.cpp b/src/plugins/debugger/gdb/gdbengine.cpp
index 8d3dab54ce4dafd5852ab1d782a9e8552c4062c0..30da068c8c31676e6a513d4367ada2bcd4459f68 100644
--- a/src/plugins/debugger/gdb/gdbengine.cpp
+++ b/src/plugins/debugger/gdb/gdbengine.cpp
@@ -238,7 +238,7 @@ private:
 
 GdbEngine::GdbEngine(const DebuggerStartParameters &startParameters,
         DebuggerEngine *masterEngine)
-  : DebuggerEngine(startParameters, CppLanguage, masterEngine)
+  : DebuggerEngine(startParameters, masterEngine)
 {
     setObjectName(_("GdbEngine"));
 
diff --git a/src/plugins/debugger/lldb/ipcenginehost.cpp b/src/plugins/debugger/lldb/ipcenginehost.cpp
index d0046a2b8806069417ca1d1d7ba47c5730290760..31e2b5321c97ffa82a612e92e080a38da28aea07 100644
--- a/src/plugins/debugger/lldb/ipcenginehost.cpp
+++ b/src/plugins/debugger/lldb/ipcenginehost.cpp
@@ -64,7 +64,7 @@ namespace Debugger {
 namespace Internal {
 
 IPCEngineHost::IPCEngineHost (const DebuggerStartParameters &startParameters)
-    : DebuggerEngine(startParameters, CppLanguage)
+    : DebuggerEngine(startParameters)
     , m_localGuest(0)
     , m_nextMessagePayloadSize(0)
     , m_cookie(1)
diff --git a/src/plugins/debugger/pdb/pdbengine.cpp b/src/plugins/debugger/pdb/pdbengine.cpp
index 7f2c0426c2bf09e1c10227c8003a97afb1d560d0..58c348e00a3128d8c5d7a08511f7fb39c912c648 100644
--- a/src/plugins/debugger/pdb/pdbengine.cpp
+++ b/src/plugins/debugger/pdb/pdbengine.cpp
@@ -88,7 +88,7 @@ namespace Internal {
 ///////////////////////////////////////////////////////////////////////
 
 PdbEngine::PdbEngine(const DebuggerStartParameters &startParameters)
-    : DebuggerEngine(startParameters, AnyLanguage)
+    : DebuggerEngine(startParameters)
 {
     setObjectName(QLatin1String("PdbEngine"));
 }
diff --git a/src/plugins/debugger/qml/qmlcppengine.cpp b/src/plugins/debugger/qml/qmlcppengine.cpp
index cba83a2e439116e9c81e68bef58dc0b6077e97de..b3577998e424cf4f053f80a75a12b3a11f9b2848 100644
--- a/src/plugins/debugger/qml/qmlcppengine.cpp
+++ b/src/plugins/debugger/qml/qmlcppengine.cpp
@@ -110,7 +110,7 @@ QmlCppEnginePrivate::QmlCppEnginePrivate(QmlCppEngine *parent,
 QmlCppEngine::QmlCppEngine(const DebuggerStartParameters &sp,
                            DebuggerEngineType slaveEngineType,
                            QString *errorMessage)
-    : DebuggerEngine(sp, DebuggerLanguages(CppLanguage) | QmlLanguage), d(new QmlCppEnginePrivate(this, sp))
+    : DebuggerEngine(sp), d(new QmlCppEnginePrivate(this, sp))
 {
     setObjectName(QLatin1String("QmlCppEngine"));
     d->m_cppEngine = DebuggerRunControlFactory::createEngine(slaveEngineType, sp, this, errorMessage);
diff --git a/src/plugins/debugger/qml/qmlengine.cpp b/src/plugins/debugger/qml/qmlengine.cpp
index 8c68ecc80501d88bcc97f9853da225a2882d523a..e4530f464d360a0df4b69afcf9f278175bf25034 100644
--- a/src/plugins/debugger/qml/qmlengine.cpp
+++ b/src/plugins/debugger/qml/qmlengine.cpp
@@ -268,7 +268,7 @@ public:
 
 QmlEngine::QmlEngine(const DebuggerStartParameters &startParameters,
         DebuggerEngine *masterEngine)
-  : DebuggerEngine(startParameters, QmlLanguage, masterEngine)
+  : DebuggerEngine(startParameters, masterEngine)
   , m_adapter(this)
   , m_inspectorAdapter(&m_adapter, this)
   , m_retryOnConnectFail(false)
diff --git a/src/plugins/debugger/script/scriptengine.cpp b/src/plugins/debugger/script/scriptengine.cpp
index e1cc8d0e1554d292aa15879765195f3968843693..2d6b9d5da38e3f0e7239c92252b3598bcd6dc704 100644
--- a/src/plugins/debugger/script/scriptengine.cpp
+++ b/src/plugins/debugger/script/scriptengine.cpp
@@ -203,7 +203,7 @@ void ScriptAgent::scriptUnload(qint64 scriptId)
 ///////////////////////////////////////////////////////////////////////
 
 ScriptEngine::ScriptEngine(const DebuggerStartParameters &startParameters)
-    : DebuggerEngine(startParameters, AnyLanguage)
+    : DebuggerEngine(startParameters)
 {
     setObjectName(QLatin1String("ScriptEngine"));
 }