diff --git a/pep-0445.txt b/pep-0445.txt
index 6bcc0192e..ce01d0049 100644
--- a/pep-0445.txt
+++ b/pep-0445.txt
@@ -308,6 +308,7 @@ Example to setup hooks on all memory allocators::
     static void* hook_malloc(void *ctx, size_t size)
     {
         PyMemAllocator *alloc = (PyMemAllocator *)ctx;
+        void *ptr;
         /* ... */
         ptr = alloc->malloc(alloc->ctx, size);
         /* ... */