diff --git a/cli/CMakeLists.txt b/cli/CMakeLists.txt
index 34e14de..695833a 100644
--- a/cli/CMakeLists.txt
+++ b/cli/CMakeLists.txt
@@ -24,6 +24,7 @@ include(QtGuiConfig)
 include(QtConfig)
 include(WindowsResources)
 include(AppTarget)
+include(ShellCompletion)
 
 # add installs for service and config files
 install(FILES ../resources/systemd/${META_PROJECT_NAME}.service
diff --git a/cli/main.cpp b/cli/main.cpp
index ac06546..bce5f06 100644
--- a/cli/main.cpp
+++ b/cli/main.cpp
@@ -32,7 +32,6 @@ int main(int argc, char *argv[])
     // setup the argument parser
     ArgumentParser parser;
     ConfigArgs configArgs(parser);
-    parser.setIgnoreUnknownArguments(false);
     // parse command line arguments
     try {
         parser.parseArgs(argc, argv);
diff --git a/gui/CMakeLists.txt b/gui/CMakeLists.txt
index 466eb47..5af5663 100644
--- a/gui/CMakeLists.txt
+++ b/gui/CMakeLists.txt
@@ -40,6 +40,7 @@ include(QtConfig)
 include(WindowsResources)
 include(WebViewProviderConfig)
 include(AppTarget)
+include(ShellCompletion)
 
 # create desktop file using previously defined meta data
 add_desktop_file()
diff --git a/gui/main.cpp b/gui/main.cpp
index 27e9a02..e9ccae8 100644
--- a/gui/main.cpp
+++ b/gui/main.cpp
@@ -31,7 +31,6 @@ int main(int argc, char *argv[])
     SET_QT_APPLICATION_INFO;
     QT_CONFIG_ARGUMENTS qtConfigArgs;
     ConfigArgs configArgs(parser);
-    parser.setIgnoreUnknownArguments(false);
     Argument webdirArg("web-dir", '\0', "specifies the directory of the web files");
     webdirArg.setCombinable(true);
     webdirArg.setRequiredValueCount(1);