diff --git a/README.md b/README.md
index 5088764..12f1fe4 100644
--- a/README.md
+++ b/README.md
@@ -32,7 +32,7 @@ You will notice the `$YOUR_EMAIL` and `$YOUR_PASSWORD` placeholders in the examp
 
 - Only supports US Carriers
 - Does not format/validate phone numbers
-- Must use full 10 digit phone number
+- Must use full 10-digit phone number
 
 ### License (MIT)