1 files changed, 1 insertions, 1 deletions
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;