diff --git a/src/components/block/index.ts b/src/components/block/index.ts
index 493f9657c..1cb96a4c0 100644
--- a/src/components/block/index.ts
+++ b/src/components/block/index.ts
@@ -528,7 +528,7 @@ export default class Block extends EventsDispatcher<BlockEvents> {
 
       try {
         // eslint-disable-next-line no-useless-call
-        this.toolInstance[methodName].call(this.toolInstance, params);
+        return this.toolInstance[methodName].call(this.toolInstance, params);
       } catch (e) {
         _.log(`Error during '${methodName}' call: ${e.message}`, 'error');
       }
diff --git a/src/components/modules/blockManager.ts b/src/components/modules/blockManager.ts
index ae8e4818c..8d752c0f4 100644
--- a/src/components/modules/blockManager.ts
+++ b/src/components/modules/blockManager.ts
@@ -546,6 +546,14 @@ export default class BlockManager extends Module {
         continue;
       }
 
+      /**
+       * prevent deletion if return -1
+       */
+      const ret: any = this.blocks[index].call('beforeSelectedDestroy');
+      if (ret === -1) {
+        continue;
+      }
+
       this.removeBlock(this.blocks[index]);
       firstSelectedBlockIndex = index;
     }