diff --git a/src/lib/lib.pro b/src/lib/lib.pro
index 335dc6212..ac0090e2b 100644
--- a/src/lib/lib.pro
+++ b/src/lib/lib.pro
@@ -518,7 +518,11 @@ qtHaveModule(ftp) {
 
     INSTALLS += target
 
-    !contains(DEFINES, NO_X11):LIBS += -lX11
+    !contains(DEFINES, NO_X11) {
+        LIBS += -lX11
+        QT *= x11extras
+    }
+
     LIBS += -lcrypto
 
     RESOURCES -= data/certs.qrc