diff --git a/scowl/speller/en.aff b/scowl/speller/en.aff
index d0cccb3..fe3f805 100644
--- a/scowl/speller/en.aff
+++ b/scowl/speller/en.aff
@@ -112,7 +112,7 @@ SFX B   e     able       [^aeiou]e
 SFX L Y 1
 SFX L   0     ment       .
 
-REP 90
+REP 93
 REP a ei
 REP ei a
 REP a ey
@@ -203,3 +203,6 @@ REP shun tion
 REP shun sion
 REP shun cion
 REP size cise
+REP th$ st
+REP th$ nd
+REP th$ rd