diff --git a/docs/src/proposals/off-chain-message-signing.md b/docs/src/proposals/off-chain-message-signing.md
index d0918ad6ad..b234627dca 100644
--- a/docs/src/proposals/off-chain-message-signing.md
+++ b/docs/src/proposals/off-chain-message-signing.md
@@ -53,7 +53,7 @@ This field **SHOULD NOT** be displayed to users
 #### Header version
 
 The header version is represented as an 8-bit unsigned integer. Only the version
-0 header format is specfied in this document
+0 header format is specified in this document
 
 This field **SHOULD NOT** be displayed to users