diff --git a/core/src/components/select/select.tsx b/core/src/components/select/select.tsx
index 9298882962..5cddbc6980 100644
--- a/core/src/components/select/select.tsx
+++ b/core/src/components/select/select.tsx
@@ -257,7 +257,7 @@ export class Select {
   }
 
   @Method()
-  open(ev?: UIEvent) {
+  open(ev?: UIEvent): Promise<HTMLIonActionSheetElement | HTMLIonAlertElement | HTMLIonPopoverElement>{
     let selectInterface = this.interface;
 
     if ((selectInterface === 'action-sheet' || selectInterface === 'popover') && this.multiple) {
diff --git a/core/src/generated.d.ts b/core/src/generated.d.ts
index 8f521fb3dd..17e4e877c0 100644
--- a/core/src/generated.d.ts
+++ b/core/src/generated.d.ts
@@ -3978,7 +3978,7 @@ declare namespace StencilComponents {
     * The text to display on the ok button. Default: `OK`.
     */
     'okText': string;
-    'open': (ev?: UIEvent | undefined) => Promise<HTMLIonPopoverElement> | Promise<HTMLIonActionSheetElement> | Promise<HTMLIonAlertElement>;
+    'open': (ev?: UIEvent | undefined) => Promise<HTMLIonActionSheetElement | HTMLIonAlertElement | HTMLIonPopoverElement>;
     /**
     * The text to display when the select is empty.
     */