diff --git a/src/plugins/debugger/debuggerplugin.cpp b/src/plugins/debugger/debuggerplugin.cpp
index 3ac268c8b66..ccec9cb7682 100644
--- a/src/plugins/debugger/debuggerplugin.cpp
+++ b/src/plugins/debugger/debuggerplugin.cpp
@@ -1173,6 +1173,7 @@ bool DebuggerPluginPrivate::parseArgument(QStringList::const_iterator &it,
         }
         DebuggerRunParameters rp;
         rp.startMode = AttachCrashedExternal;
+        rp.languages = CppLanguage;
         rp.crashParameter = it->section(QLatin1Char(':'), 0, 0);
         rp.attachPID = it->section(QLatin1Char(':'), 1, 1).toULongLong();
         rp.displayName = tr("Crashed process %1").arg(rp.attachPID);
diff --git a/src/plugins/debugger/debuggerruncontrol.cpp b/src/plugins/debugger/debuggerruncontrol.cpp
index fab12a1920a..3f4625d7c8a 100644
--- a/src/plugins/debugger/debuggerruncontrol.cpp
+++ b/src/plugins/debugger/debuggerruncontrol.cpp
@@ -485,11 +485,12 @@ void DebuggerRunControlCreator::enrich(const RunConfiguration *runConfig, const
                 m_rp.masterEngineType = QmlEngineType;
                 service = QmlDebug::QmlDebuggerServices;
             }
-            if (m_rp.startMode != AttachExternal)
+            if (m_rp.startMode != AttachExternal && m_rp.startMode != AttachCrashedExternal) {
                 QtcProcess::addArg(&m_rp.inferior.commandLineArguments,
                                    (m_rp.languages & CppLanguage) && m_rp.nativeMixedEnabled ?
                                        QmlDebug::qmlDebugNativeArguments(service, false) :
                                        QmlDebug::qmlDebugTcpArguments(service, m_rp.qmlServerPort));
+            }
         }
     }