diff --git a/src.ts/hash/typed-data.ts b/src.ts/hash/typed-data.ts
index 59a513ca8a..3fdbd8c413 100644
--- a/src.ts/hash/typed-data.ts
+++ b/src.ts/hash/typed-data.ts
@@ -105,7 +105,7 @@ function getBaseEncoder(type: string): null | ((value: any) => string) {
 
                 assertArgument(value >= boundsLower && value <= boundsUpper, `value out-of-bounds for ${ type }`, "value", value);
 
-                return toBeHex(toTwos(value, 256), 32);
+                return toBeHex(signed ? toTwos(value, 256): value, 32);
             };
         }
     }
diff --git a/testcases/typed-data.json.gz b/testcases/typed-data.json.gz
index afe593ccbe..a997d2a7eb 100644
Binary files a/testcases/typed-data.json.gz and b/testcases/typed-data.json.gz differ