diff --git a/src/functions/DeepStrictAssert.ts b/src/functions/DeepStrictAssert.ts
index 5c939aa..4fb8d92 100644
--- a/src/functions/DeepStrictAssert.ts
+++ b/src/functions/DeepStrictAssert.ts
@@ -52,7 +52,7 @@ export const deepStrictAssert =
           return { [first]: input[first] };
         }
 
-        throw new Error(`input doesn\'t has key: ${first}`);
+        throw new Error(`input doesn\'t have key: ${first}`);
       }
     };