diff --git a/toolkit/xre/nsNativeAppSupportWin.cpp b/toolkit/xre/nsNativeAppSupportWin.cpp
index a6a9b03f3fb0..b576cb45ddcd 100644
--- a/toolkit/xre/nsNativeAppSupportWin.cpp
+++ b/toolkit/xre/nsNativeAppSupportWin.cpp
@@ -334,10 +334,10 @@ NS_IMPL_RELEASE_INHERITED(nsNativeAppSupportWin, nsNativeAppSupportBase)
 
 void
 nsNativeAppSupportWin::CheckConsole() {
-    for ( int i = 1; i < __argc; i++ ) {
-        if ( strcmp( "-console", __argv[i] ) == 0
+    for ( int i = 1; i < gArgc; i++ ) {
+        if ( strcmp( "-console", gArgv[i] ) == 0
              ||
-             strcmp( "/console", __argv[i] ) == 0 ) {
+             strcmp( "/console", gArgv[i] ) == 0 ) {
             // Users wants to make sure we have a console.
             // Try to allocate one.
             BOOL rc = ::AllocConsole();