diff --git a/clientgui/BOINCGUIApp.cpp b/clientgui/BOINCGUIApp.cpp
index d604c8d774..4ea48431fe 100644
--- a/clientgui/BOINCGUIApp.cpp
+++ b/clientgui/BOINCGUIApp.cpp
@@ -541,7 +541,7 @@ bool CBOINCGUIApp::OnCmdLineParsed(wxCmdLineParser &parser) {
     if (parser.Found(wxT("insecure"))) {
         g_use_sandbox = false;
     }
-    if (parser.Found(wxT("checkSkins"))) {
+    if (parser.Found(wxT("checkskins"))) {
         m_bDebugSkins = true;
     }