1 files changed, 1 insertions, 1 deletions
diff --git a/packages/utils/src/abi_encoder/evm_data_types/static_bytes.ts b/packages/utils/src/abi_encoder/evm_data_types/static_bytes.ts
index 2c649cb33..3a2ad410f 100644
--- a/packages/utils/src/abi_encoder/evm_data_types/static_bytes.ts
+++ b/packages/utils/src/abi_encoder/evm_data_types/static_bytes.ts
@@ -21,7 +21,7 @@ export class StaticBytes extends AbstractDataTypes.Blob {
     private static _decodeWidthFromType(type: string): number {
         const matches = StaticBytes._MATCHER.exec(type);
         const width =
-            matches !== null && matches.length === 3 && matches[2] !== undefined
+            !_.isNull(matches) && matches.length === 3 && !_.isUndefined(matches[2])
                 ? parseInt(matches[2], Constants.DEC_BASE)
                 : StaticBytes._DEFAULT_WIDTH;
         return width;