diff --git a/Microsoft/Contractions.yml b/Microsoft/Contractions.yml
index ded330f..8c81dcb 100644
--- a/Microsoft/Contractions.yml
+++ b/Microsoft/Contractions.yml
@@ -22,7 +22,7 @@ swap:
 
   should not: shouldn't
 
-  'that is(?!\.)': that's
+  "that is(?![.,])": that's
   'that''s(?=\.)': that is
 
   'they are(?!\.)': they're
diff --git a/fixtures/Contractions/test.md b/fixtures/Contractions/test.md
index e57bfd5..4836024 100644
--- a/fixtures/Contractions/test.md
+++ b/fixtures/Contractions/test.md
@@ -387,3 +387,7 @@ Will not you join us?
 You will not regret it.
 
 I will not.
+
+<!-- Should pass -->
+
+AllMatch returns true if pred returns true for all elements produced by prod, that is, all elements match.
\ No newline at end of file