diff --git a/src/environments/fancythm/fancythm.dtx b/src/environments/fancythm/fancythm.dtx
index fa530f5..dc840df 100644
--- a/src/environments/fancythm/fancythm.dtx
+++ b/src/environments/fancythm/fancythm.dtx
@@ -843,6 +843,7 @@
           \fancythm_provide_tiny_theorem:nn { } { reminder }
       }
   }
+\DeclareHookRule { begindocument / before } { groupthm } { after } { fancythm }
 %    \end{macrocode}
 % 
 %