diff --git a/src/apps/workspaces/Workspaces.cpp b/src/apps/workspaces/Workspaces.cpp
index dac07a6b36..17fc65c4e0 100644
--- a/src/apps/workspaces/Workspaces.cpp
+++ b/src/apps/workspaces/Workspaces.cpp
@@ -356,6 +356,16 @@ WorkspacesApp::ArgvReceived(int32 argc, char **argv)
 			// if the app is running, don't quit
 			// but if it isn't, cancel the complete run, so it doesn't
 			// open any window
+			if (IsLaunching())
+				Quit();
+		} else if (!strcmp(argv[i], "-")) {
+			activate_workspace(current_workspace() - 1);
+
+			if (IsLaunching())
+				Quit();
+		} else if (!strcmp(argv[i], "+")) {
+			activate_workspace(current_workspace() + 1);
+
 			if (IsLaunching())
 				Quit();
 		} else {