diff --git a/src/http/ngx_http.c b/src/http/ngx_http.c
index 2286663..3ef1dcb 100644
--- a/src/http/ngx_http.c
+++ b/src/http/ngx_http.c
@@ -19,7 +19,7 @@
 static char *ngx_http_merge_locations(ngx_conf_t *cf,
     ngx_array_t *locations, void **loc_conf, ngx_http_module_t *module,
     ngx_uint_t ctx_index);
-static int ngx_http_cmp_conf_in_addrs(const void *one, const void *two);
+static ngx_int_t ngx_http_cmp_conf_in_addrs(const void *one, const void *two);
 static int ngx_libc_cdecl ngx_http_cmp_dns_wildcards(const void *one,
     const void *two);
 
@@ -1089,7 +1089,7 @@
 }
 
 
-static int
+static ngx_int_t
 ngx_http_cmp_conf_in_addrs(const void *one, const void *two)
 {
     ngx_http_conf_in_addr_t  *first, *second;
diff --git a/src/http/ngx_http_core_module.c b/src/http/ngx_http_core_module.c
index 08c1d35..ec307cb 100644
--- a/src/http/ngx_http_core_module.c
+++ b/src/http/ngx_http_core_module.c
@@ -45,7 +45,8 @@
     void *dummy);
 static char *ngx_http_core_location(ngx_conf_t *cf, ngx_command_t *cmd,
     void *dummy);
-static int ngx_http_core_cmp_locations(const void *first, const void *second);
+static ngx_int_t ngx_http_core_cmp_locations(const void *first,
+    const void *second);
 
 static char *ngx_http_core_types(ngx_conf_t *cf, ngx_command_t *cmd,
     void *conf);
@@ -2297,7 +2298,7 @@
 }
 
 
-static int
+static ngx_int_t
 ngx_http_core_cmp_locations(const void *one, const void *two)
 {
     ngx_int_t                  rc;
diff --git a/src/http/ngx_http_upstream_round_robin.c b/src/http/ngx_http_upstream_round_robin.c
index c25c076..0621371 100644
--- a/src/http/ngx_http_upstream_round_robin.c
+++ b/src/http/ngx_http_upstream_round_robin.c
@@ -9,7 +9,8 @@
 #include <ngx_http.h>
 
 
-static int ngx_http_upstream_cmp_servers(const void *one, const void *two);
+static ngx_int_t ngx_http_upstream_cmp_servers(const void *one,
+    const void *two);
 static ngx_uint_t
 ngx_http_upstream_get_peer(ngx_http_upstream_rr_peers_t *peers);
 
@@ -185,7 +186,7 @@
 }
 
 
-static int
+static ngx_int_t
 ngx_http_upstream_cmp_servers(const void *one, const void *two)
 {
     ngx_http_upstream_rr_peer_t  *first, *second;