1 files changed, 2 insertions, 2 deletions
diff --git a/emscripten.py b/emscripten.py
index ce1bc48f..931e4ef3 100755
--- a/emscripten.py
+++ b/emscripten.py
@@ -11,8 +11,8 @@ def emscripten(filename, js_engine, settings):
   subprocess.Popen([js_engine, COMPILER], stdin=subprocess.PIPE).communicate(settings+'\n'+data)[0]
   os.chdir(cwd)
 
-if __name__ == '__main__':
-  if sys.argv.__len__() != 3:
+if __name__ == '__main__':
+  if sys.argv.__len__() not in [3,4]:
     print '''\nEmscripten usage:          emscripten.py INFILE PATH-TO-JS-ENGINE [SETTINGS]\n'''
   else:
     emscripten(sys.argv[1], sys.argv[2],  sys.argv[3] if len(sys.argv) == 4 else "{}")