diff --git a/main_wayland.cpp b/main_wayland.cpp
index ae3a16a1eb..48fc08ebd1 100644
--- a/main_wayland.cpp
+++ b/main_wayland.cpp
@@ -170,7 +170,7 @@ KWIN_EXPORT int kdemain(int argc, char * argv[])
     QByteArray xServer;
     for (int i = 1; i < argc; ++i) {
         QByteArray arg = argv[i];
-        if (arg == "-x" || arg == "--start-X-Server") {
+        if (arg == "-x" || arg == "--x-server") {
             if (++i < argc) {
                 xServer = argv[i];
             }