diff --git a/src/backHandlerRe.re b/src/backHandlerRe.re
index fbc7604b6b80a4..87d2df67c802a1 100644
--- a/src/backHandlerRe.re
+++ b/src/backHandlerRe.re
@@ -1,8 +1,7 @@
-external exitApp : unit => unit =
-  "" [@@bs.scope "BackHandler"] [@@bs.module "react-native"];
+external exitApp : unit => unit = "" [@@bs.scope "BackHandler"] [@@bs.module "react-native"];
 
-external addEventListener : string => (unit => unit) => unit =
+external addEventListener : string => (unit => bool) => unit =
   "" [@@bs.scope "BackHandler"] [@@bs.module "react-native"];
 
-external removeEventListener : string => (unit => unit) => unit =
-  "" [@@bs.scope "BackHandler"] [@@bs.module "react-native"];
\ No newline at end of file
+external removeEventListener : string => (unit => bool) => unit =
+  "" [@@bs.scope "BackHandler"] [@@bs.module "react-native"];
diff --git a/src/backHandlerRe.rei b/src/backHandlerRe.rei
index fbc7604b6b80a4..87d2df67c802a1 100644
--- a/src/backHandlerRe.rei
+++ b/src/backHandlerRe.rei
@@ -1,8 +1,7 @@
-external exitApp : unit => unit =
-  "" [@@bs.scope "BackHandler"] [@@bs.module "react-native"];
+external exitApp : unit => unit = "" [@@bs.scope "BackHandler"] [@@bs.module "react-native"];
 
-external addEventListener : string => (unit => unit) => unit =
+external addEventListener : string => (unit => bool) => unit =
   "" [@@bs.scope "BackHandler"] [@@bs.module "react-native"];
 
-external removeEventListener : string => (unit => unit) => unit =
-  "" [@@bs.scope "BackHandler"] [@@bs.module "react-native"];
\ No newline at end of file
+external removeEventListener : string => (unit => bool) => unit =
+  "" [@@bs.scope "BackHandler"] [@@bs.module "react-native"];