diff --git a/nummi/main/forms.py b/nummi/main/forms.py
index f6e3b83..82c0146 100644
--- a/nummi/main/forms.py
+++ b/nummi/main/forms.py
@@ -14,7 +14,8 @@ class NummiForm(forms.ModelForm):
 
     @property
     def fieldsets(self):
-        for group in self.meta_fieldsets:
-            yield ((self[f] for f in fieldset) for fieldset in group)
+        if self.meta_fieldsets:
+            for group in self.meta_fieldsets:
+                yield ((self[f] for f in fieldset) for fieldset in group)
         else:
             yield ([f] for f in self)