diff --git a/src/core/ngx_cycle.c b/src/core/ngx_cycle.c
index cd9efbe..d77dcc1 100644
--- a/src/core/ngx_cycle.c
+++ b/src/core/ngx_cycle.c
@@ -204,7 +204,7 @@
         return NULL;
     }
 
-    ngx_memcpy(cycle->hostname.data, hostname, cycle->hostname.len);
+    ngx_strlow(cycle->hostname.data, (u_char *) hostname, cycle->hostname.len);
 
 
     for (i = 0; ngx_modules[i]; i++) {