diff --git a/packages/ketcher-core/src/domain/entities/sgroup.ts b/packages/ketcher-core/src/domain/entities/sgroup.ts
index c826b5d2f6..1c1cd08ace 100644
--- a/packages/ketcher-core/src/domain/entities/sgroup.ts
+++ b/packages/ketcher-core/src/domain/entities/sgroup.ts
@@ -228,7 +228,7 @@ export class SGroup {
     const attachPointId = this.getAttAtomId(struct)
     const neighbours = struct.atomGetNeighbors(attachPointId)
 
-    return !!neighbours?.every(({ aid }) => this.atoms.includes(aid))
+    return !neighbours?.every(({ aid }) => this.atoms.includes(aid))
   }
 
   static getOffset(sgroup: SGroup): null | Vec2 {