diff --git a/noise-protocol/src/handshakepattern.rs b/noise-protocol/src/handshakepattern.rs
index 53bceca..5c464ef 100644
--- a/noise-protocol/src/handshakepattern.rs
+++ b/noise-protocol/src/handshakepattern.rs
@@ -31,7 +31,7 @@ impl HandshakePattern {
     ///
     /// # Pattern validity
     ///
-    /// It is the caller's responlity to ensure that the pattern is *valid*.
+    /// It is the caller's responsibility to ensure that the pattern is *valid*.
     ///
     /// # Panics
     ///