diff --git a/greeter/main.cpp b/greeter/main.cpp
--- a/greeter/main.cpp
+++ b/greeter/main.cpp
@@ -73,8 +73,8 @@
 
     // explicitly disable input methods as it makes it impossible to unlock, see BUG 306932
     // but explicitly set on screen keyboard such as maliit is allowed
-    if (qEnvironmentVariableIsSet("QT_IM_MODULE") && qgetenv("QT_IM_MODULE") != QByteArrayLiteral("maliit")) {
-        qputenv("QT_IM_MODULE", QByteArrayLiteral("compose"));
+    if (!qEnvironmentVariableIsSet("QT_IM_MODULE") || (qEnvironmentVariableIsSet("QT_IM_MODULE") && qgetenv("QT_IM_MODULE") != QByteArrayLiteral("maliit"))) {
+        qputenv("QT_IM_MODULE", QByteArrayLiteral("qtvirtualkeyboard"));
     }
     ScreenLocker::UnlockApp app(argc, argv);
     app.setQuitOnLastWindowClosed(false);