diff --git a/dictsource/ru_rules b/dictsource/ru_rules
index afaa733a..8919873a 100644
--- a/dictsource/ru_rules
+++ b/dictsource/ru_rules
@@ -275,7 +275,7 @@
         с (сY   s;
         с (тY   s;
         с (ть   s
-        сч      S;
+        с (ч    S;
         с (ш    S
         с (щ    s;s;