diff --git a/lib/std/heap/debug_allocator.zig b/lib/std/heap/debug_allocator.zig
index 38b9303479..8e66f722c3 100644
--- a/lib/std/heap/debug_allocator.zig
+++ b/lib/std/heap/debug_allocator.zig
@@ -69,7 +69,7 @@
 //! versa.
 //!
 //! When a bucket is full, a new one is allocated, containing a pointer to the
-//! previous one. This singly-linked list is iterated during leak detection.
+//! previous one. This doubly-linked list is iterated during leak detection.
 //!
 //! Resizing and remapping work the same on small allocations: if the size
 //! class would not change, then the operation succeeds, and the address is