diff --git a/src/core/service/api/ui/keyboard.js b/src/core/service/api/ui/keyboard.js
index e01c473139553537933c2baf50874385d7667c2b..d4f17e42e93483eef58e3a9d973a8f57f738761f 100644
--- a/src/core/service/api/ui/keyboard.js
+++ b/src/core/service/api/ui/keyboard.js
@@ -4,16 +4,16 @@ import {
 
 import {
   onMethod
-} from '../../platform'
-
-const callbacks = []
-
+} from '../../platform'
+
+let callback
+
 onMethod('onKeyboardHeightChange', res => {
-  callbacks.forEach(callbackId => {
-    invoke(callbackId, res)
-  })
-})
+  if (callback) {
+    invoke(callback, res)
+  }
+})
 
 export function onKeyboardHeightChange (callbackId) {
-  callbacks.push(callbackId)
-}
+  callback = callbackId
+}