diff --git a/src/Add-on/LookOverBoardInfos/LookOverBoardInfosTool.ts b/src/Add-on/LookOverBoardInfos/LookOverBoardInfosTool.ts
index 59ed0b514..ddabd045b 100644
--- a/src/Add-on/LookOverBoardInfos/LookOverBoardInfosTool.ts
+++ b/src/Add-on/LookOverBoardInfos/LookOverBoardInfosTool.ts
@@ -124,7 +124,7 @@ class LookOverBoardInfosTool
             {
                 for (let ids of idList)
                 {
-                    let holes = ids.map(id => id.Object) as Hole[];
+                    let holes = ids.map(id => id.Object).filter(h => h) as Hole[];
 
                     if (!holes[0] || !HoleInBoard(holes, b))
                         continue;