diff --git a/Penumbra/Game/ObjectIdentification.cs b/Penumbra/Game/ObjectIdentification.cs
index 2dc0e635..ccfaedbd 100644
--- a/Penumbra/Game/ObjectIdentification.cs
+++ b/Penumbra/Game/ObjectIdentification.cs
@@ -145,8 +145,12 @@ namespace Penumbra.Game
 
                 idx = ~idx;
             }
-
             var endIdx = idx + 1;
+            if( endIdx == list.Count )
+            {
+                return ( idx, endIdx );
+            }
+
             while( maskedKey == ( list[ endIdx ].Item1 & mask ) )
             {
                 ++endIdx;