diff --git a/specs/test_formats/bls/priv_to_pub.md b/specs/test_formats/bls/priv_to_pub.md
index 7af148d0f..ef62241ae 100644
--- a/specs/test_formats/bls/priv_to_pub.md
+++ b/specs/test_formats/bls/priv_to_pub.md
@@ -9,7 +9,7 @@ input: bytes32 -- the private key
 output: bytes48 -- the public key
 ```
 
-All byte(s) fields are encoded as strings, hexadecimal encoding, prefixed with `0x`
+All byte(s) fields are encoded as strings, hexadecimal encoding, prefixed with `0x`.
 
 
 ## Condition