diff --git a/packages/jsActions/nanoflow-actions-hybrid/src/camera/ScanBarcode.ts b/packages/jsActions/nanoflow-actions-hybrid/src/camera/ScanBarcode.ts
index 961abe9280..c189933d60 100644
--- a/packages/jsActions/nanoflow-actions-hybrid/src/camera/ScanBarcode.ts
+++ b/packages/jsActions/nanoflow-actions-hybrid/src/camera/ScanBarcode.ts
@@ -12,7 +12,7 @@
 /**
  * @returns {Promise.<string>}
  */
-export async function ScanBarcode(): Promise<string> {
+export async function ScanBarcode(): Promise<string | void> {
     // BEGIN USER CODE
     // Documentation https://github.com/phonegap/phonegap-plugin-barcodescanner
     return new Promise((resolve, reject) => {
diff --git a/packages/jsActions/nanoflow-actions-hybrid/src/contacts/SelectContact.ts b/packages/jsActions/nanoflow-actions-hybrid/src/contacts/SelectContact.ts
index e77c42be98..d4ff74602a 100644
--- a/packages/jsActions/nanoflow-actions-hybrid/src/contacts/SelectContact.ts
+++ b/packages/jsActions/nanoflow-actions-hybrid/src/contacts/SelectContact.ts
@@ -12,7 +12,7 @@
 /**
  * @returns {Promise.<MxObject>}
  */
-export async function SelectContact(): Promise<mendix.lib.MxObject> {
+export async function SelectContact(): Promise<mendix.lib.MxObject | void> {
     // BEGIN USER CODE
     // Documentation: https://github.com/apache/cordova-plugin-contacts
     return new Promise((resolve, reject) => {