diff --git a/dictsource/de_rules b/dictsource/de_rules
index fa98e595..de1b1181 100644
--- a/dictsource/de_rules
+++ b/dictsource/de_rules
@@ -1108,7 +1108,7 @@ formal) ie         =I@
         st (art    St
         st (ä      St
         st (eh     St
-        st (ein	St
+        stein (_	StaIn
         st (ö      St
         st (rich   St
         st (ü      St