diff --git a/src/dbus/qdbusintegrator.cpp b/src/dbus/qdbusintegrator.cpp
index 804277157b..519b8d1fa4 100644
--- a/src/dbus/qdbusintegrator.cpp
+++ b/src/dbus/qdbusintegrator.cpp
@@ -996,8 +996,6 @@ void QDBusConnectionPrivate::deliverCall(QObject *object, int /*flags*/, const Q
     return;
 }
 
-extern bool qDBusInitThreads();
-
 QDBusConnectionPrivate::QDBusConnectionPrivate(QObject *p)
     : QObject(p),
       ref(1),