diff --git a/src/zmalloc.c b/src/zmalloc.c
index 4a7f2028e..565376721 100644
--- a/src/zmalloc.c
+++ b/src/zmalloc.c
@@ -236,9 +236,6 @@ void *zrealloc_usable(void *ptr, size_t size, size_t *usable) {
 size_t zmalloc_size(void *ptr) {
     void *realptr = (char*)ptr-PREFIX_SIZE;
     size_t size = *((size_t*)realptr);
-    /* Assume at least that all the allocations are padded at sizeof(long) by
-     * the underlying allocator. */
-    if (size&(sizeof(long)-1)) size += sizeof(long)-(size&(sizeof(long)-1));
     return size+PREFIX_SIZE;
 }
 size_t zmalloc_usable_size(void *ptr) {