diff --git a/src/lib/components/Keyboard.ts b/src/lib/components/Keyboard.ts
index a738ced7..962ae09b 100644
--- a/src/lib/components/Keyboard.ts
+++ b/src/lib/components/Keyboard.ts
@@ -1688,7 +1688,7 @@ class SimpleKeyboard {
           updated_startIndex,
           updated_endIndex - updated_startIndex + 1
         );
-        removedElements = updated_endIndex - updated_startIndex;
+        removedElements += updated_endIndex - updated_startIndex;
 
         /**
          * Inserting elements to container