diff --git a/src/index.tsx b/src/index.tsx
index 28937633..1639655f 100644
--- a/src/index.tsx
+++ b/src/index.tsx
@@ -505,7 +505,7 @@ export class Modalize<FlatListItem = any, SectionListItem = any> extends React.C
     }
   };
 
-  private onBackPress = async (): Promise<boolean> => {
+  private onBackPress = (): boolean => {
     const { onBackButtonPress, alwaysOpen } = this.props;
 
     if (alwaysOpen) {
@@ -513,7 +513,7 @@ export class Modalize<FlatListItem = any, SectionListItem = any> extends React.C
     }
 
     if (onBackButtonPress) {
-      onBackButtonPress();
+      return onBackButtonPress();
     } else {
       this.close();
     }
diff --git a/src/options.ts b/src/options.ts
index 4f76e9b6..76ffbbec 100644
--- a/src/options.ts
+++ b/src/options.ts
@@ -217,7 +217,7 @@ export interface IProps<FlatListItem = any, SectionListItem = any> {
    * Android or the menu button on Apple TV. You can any function you want,
    * but you will have to close the modal by yourself.
    */
-  onBackButtonPress?: () => void;
+  onBackButtonPress?: () => boolean;
 
   /**
    * Callback function which determines if the modal has reached the top