1 files changed, 3 insertions, 3 deletions
diff --git a/pygtk.py b/pygtk.py
index 92abf36..821f567 100644
--- a/pygtk.py
+++ b/pygtk.py
@@ -46,14 +46,14 @@ def _get_available_versions():
 def require(version):
     global _pygtk_required_version
 
-    assert not sys.modules.has_key('gtk'), \
-           "pygtk.require() must be called before importing gtk"
-
     if _pygtk_required_version != None:
         assert _pygtk_required_version == version, \
                "a different version of gtk was already required"
         return
 
+    assert not sys.modules.has_key('gtk'), \
+           "pygtk.require() must be called before importing gtk"
+
     versions = _get_available_versions()
     assert versions.has_key(version), \
            "required version '%s' not found on system" % version