diff --git a/Products/PloneFormGen/__init__.py b/Products/PloneFormGen/__init__.py
index 261580f1..a8742a80 100644
--- a/Products/PloneFormGen/__init__.py
+++ b/Products/PloneFormGen/__init__.py
@@ -18,7 +18,7 @@
 
 # Check for Plone versions
 from Products.CMFPlone import __version__
-if __version__ > 4:
+if __version__ < 5:
     raise Exception("This version of PloneFormGen requires Plone >= 5")