diff --git a/Sources/OpenSwiftUICore/Layout/Alignment/AlignmentGuide.swift b/Sources/OpenSwiftUICore/Layout/Alignment/AlignmentGuide.swift
index 0dae8a3c5..4428407be 100644
--- a/Sources/OpenSwiftUICore/Layout/Alignment/AlignmentGuide.swift
+++ b/Sources/OpenSwiftUICore/Layout/Alignment/AlignmentGuide.swift
@@ -1241,7 +1241,7 @@ public struct AlignmentKey: Hashable, Comparable {
     package var axis: Axis { bits & 1 == 0 ? .horizontal : .vertical }
 
     @inline(__always)
-    var index: Int { Int(bits / 2 - 1) }
+    var index: Int { Int((bits - 2) >> 1) }
 
     package init(id: any AlignmentID.Type, axis: Axis) {
         let index = Self.$typeCache.access { cache in
@@ -1255,7 +1255,7 @@ public struct AlignmentKey: Hashable, Comparable {
                 return index
             }
         }
-        bits = (axis == .horizontal ? 0 : 1) + (index + 1) * 2
+        bits = ((index << 1) | (axis == .horizontal ? 0 : 1)) &+ 2
     }
 
     package init() { bits = .zero }