diff --git a/Sources/OpenSwiftUICore/Data/Util/ConcatenatedCollection.swift b/Sources/OpenSwiftUICore/Data/Util/ConcatenatedCollection.swift
index e35e30ff0..5cea6afb0 100644
--- a/Sources/OpenSwiftUICore/Data/Util/ConcatenatedCollection.swift
+++ b/Sources/OpenSwiftUICore/Data/Util/ConcatenatedCollection.swift
@@ -426,7 +426,7 @@ extension Collection {
                 remaining = half
             } else {
                 low = index(after: mid)
-                remaining = remaining - half - 1
+                remaining &-= (half &+ 1)
             }
         }
         return low