2 files changed, 2 insertions, 2 deletions
diff --git a/packages/utils/src/abi_encoder/abstract_data_types/types/blob.ts b/packages/utils/src/abi_encoder/abstract_data_types/types/blob.ts
index 35ccc0586..965738056 100644
--- a/packages/utils/src/abi_encoder/abstract_data_types/types/blob.ts
+++ b/packages/utils/src/abi_encoder/abstract_data_types/types/blob.ts
@@ -19,7 +19,7 @@ export abstract class Blob extends DataType {
         const encodedValue = this.encodeValue(value);
         const name = this.getDataItem().name;
         const signature = this.getSignature();
-        const parentName = parentBlock ? parentBlock.getName() : '';
+        const parentName = _.isUndefined(parentBlock) ? '' : parentBlock.getName();
         const block = new CalldataBlocks.Blob(name, signature, parentName, encodedValue);
         return block;
     }
diff --git a/packages/utils/src/abi_encoder/abstract_data_types/types/set.ts b/packages/utils/src/abi_encoder/abstract_data_types/types/set.ts
index 5a188d6fa..637abfb7d 100644
--- a/packages/utils/src/abi_encoder/abstract_data_types/types/set.ts
+++ b/packages/utils/src/abi_encoder/abstract_data_types/types/set.ts
@@ -204,7 +204,7 @@ export abstract class Set extends DataType {
         const range = _.range(length);
         _.each(range, (idx: number) => {
             const memberDataItem: DataItem = {
-                type: this._arrayElementType ? this._arrayElementType : '',
+                type: _.isUndefined(this._arrayElementType) ? '' : this._arrayElementType,
                 name: `${dataItem.name}[${idx.toString(Constants.DEC_BASE)}]`,
             };
             const components = dataItem.components;