diff --git a/src/konqmain.cpp b/src/konqmain.cpp
--- a/src/konqmain.cpp
+++ b/src/konqmain.cpp
@@ -111,6 +111,7 @@
     QCommandLineParser parser;
     parser.addVersionOption();
     parser.addHelpOption();
+    parser.setSingleDashWordOptionMode(QCommandLineParser::ParseAsLongOptions);
     aboutData.setupCommandLine(&parser);
 
     parser.addOption(QCommandLineOption(QStringList{QStringLiteral("silent")}, i18n("Start without a default window, when called without URLs")));