diff --git a/src/lib.rs b/src/lib.rs
index 3da2148..cc44297 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -552,7 +552,7 @@ fn map_rust_month(month: &u8) -> JsMonth {
     9 => JsMonth::October,
     10 => JsMonth::November,
     11 => JsMonth::December,
-    _ => panic!("Unkown month index: {}", month),
+    _ => panic!("Unknown month index: {}", month),
   }
 }