diff --git a/library/core/src/alloc/layout.rs b/library/core/src/alloc/layout.rs
index cd5fd77f8659..1f37c978fecf 100644
--- a/library/core/src/alloc/layout.rs
+++ b/library/core/src/alloc/layout.rs
@@ -316,8 +316,7 @@ impl Layout {
         // Size 1 Align MAX or Size isize::MAX Align 2 round up to `isize::MAX + 1`.)
         unsafe {
             let align_m1 = unchecked_sub(align.as_usize(), 1);
-            let size_rounded_up = unchecked_add(self.size, align_m1) & !align_m1;
-            size_rounded_up
+            unchecked_add(self.size, align_m1) & !align_m1
         }
     }