diff --git a/packages/ketcher-core/src/application/render/pathBuilder.ts b/packages/ketcher-core/src/application/render/pathBuilder.ts
index 942df01814..16cb04c6f1 100644
--- a/packages/ketcher-core/src/application/render/pathBuilder.ts
+++ b/packages/ketcher-core/src/application/render/pathBuilder.ts
@@ -47,6 +47,11 @@ export class PathBuilder {
     return this;
   }
 
+  addPathParts(pathParts: Array<string>): PathBuilder {
+    this.pathParts = this.pathParts.concat(pathParts);
+    return this;
+  }
+
   addOpenArrowPathParts(
     start: Vec2,
     arrowLength: number,