diff --git a/src/czech/NumeralCze.gf b/src/czech/NumeralCze.gf
index 26d98fb7..6411d025 100644
--- a/src/czech/NumeralCze.gf
+++ b/src/czech/NumeralCze.gf
@@ -1,6 +1,6 @@
 concrete NumeralCze of Numeral =
 
-  CatCze **
+  CatCze [Numeral,Digits] **
   
   open
     ResCze,
diff --git a/src/slovak/NumeralSlo.gf b/src/slovak/NumeralSlo.gf
index 96b2229f..f96f8adc 100644
--- a/src/slovak/NumeralSlo.gf
+++ b/src/slovak/NumeralSlo.gf
@@ -1,6 +1,6 @@
 concrete NumeralSlo of Numeral =
 
-  CatSlo **
+  CatSlo [Numeral,Digits] **
   
   open
     ResSlo,