diff --git a/src/core/ngx_hash.c b/src/core/ngx_hash.c
index fe95693..c7bfed7 100644
--- a/src/core/ngx_hash.c
+++ b/src/core/ngx_hash.c
@@ -282,7 +282,7 @@
         start = hinit->max_size - 1000;
     }
 
-    for (size = start; size < hinit->max_size; size++) {
+    for (size = start; size <= hinit->max_size; size++) {
 
         ngx_memzero(test, size * sizeof(u_short));