diff --git a/src/http/modules/ngx_http_fastcgi_module.c b/src/http/modules/ngx_http_fastcgi_module.c
index 6b1977340..ddd72493f 100644
--- a/src/http/modules/ngx_http_fastcgi_module.c
+++ b/src/http/modules/ngx_http_fastcgi_module.c
@@ -656,6 +656,13 @@ static ngx_str_t  ngx_http_fastcgi_hide_headers[] = {
 };
 
 
+static ngx_keyval_t  ngx_http_fastcgi_headers[] = {
+    { ngx_string("HTTP_HOST"),
+      ngx_string("$host$is_request_port$request_port") },
+    { ngx_null_string, ngx_null_string }
+};
+
+
 #if (NGX_HTTP_CACHE)
 
 static ngx_keyval_t  ngx_http_fastcgi_cache_headers[] = {
@@ -3276,7 +3283,8 @@ ngx_http_fastcgi_merge_loc_conf(ngx_conf_t *cf, void *parent, void *child)
         conf->params_source = prev->params_source;
     }
 
-    rc = ngx_http_fastcgi_init_params(cf, conf, &conf->params, NULL);
+    rc = ngx_http_fastcgi_init_params(cf, conf, &conf->params,
+                                      ngx_http_fastcgi_headers);
     if (rc != NGX_OK) {
         return NGX_CONF_ERROR;
     }
diff --git a/src/http/modules/ngx_http_scgi_module.c b/src/http/modules/ngx_http_scgi_module.c
index 49977b07b..ffb1d0874 100644
--- a/src/http/modules/ngx_http_scgi_module.c
+++ b/src/http/modules/ngx_http_scgi_module.c
@@ -453,6 +453,13 @@ static ngx_str_t ngx_http_scgi_hide_headers[] = {
 };
 
 
+static ngx_keyval_t  ngx_http_scgi_headers[] = {
+    { ngx_string("HTTP_HOST"),
+      ngx_string("$host$is_request_port$request_port") },
+    { ngx_null_string, ngx_null_string }
+};
+
+
 #if (NGX_HTTP_CACHE)
 
 static ngx_keyval_t  ngx_http_scgi_cache_headers[] = {
@@ -1675,7 +1682,8 @@ ngx_http_scgi_merge_loc_conf(ngx_conf_t *cf, void *parent, void *child)
         conf->params_source = prev->params_source;
     }
 
-    rc = ngx_http_scgi_init_params(cf, conf, &conf->params, NULL);
+    rc = ngx_http_scgi_init_params(cf, conf, &conf->params,
+                                   ngx_http_scgi_headers);
     if (rc != NGX_OK) {
         return NGX_CONF_ERROR;
     }
diff --git a/src/http/modules/ngx_http_uwsgi_module.c b/src/http/modules/ngx_http_uwsgi_module.c
index c1d0035cc..41fa815dc 100644
--- a/src/http/modules/ngx_http_uwsgi_module.c
+++ b/src/http/modules/ngx_http_uwsgi_module.c
@@ -629,6 +629,13 @@ static ngx_str_t ngx_http_uwsgi_hide_headers[] = {
 };
 
 
+static ngx_keyval_t  ngx_http_uwsgi_headers[] = {
+    { ngx_string("HTTP_HOST"),
+      ngx_string("$host$is_request_port$request_port") },
+    { ngx_null_string, ngx_null_string }
+};
+
+
 #if (NGX_HTTP_CACHE)
 
 static ngx_keyval_t  ngx_http_uwsgi_cache_headers[] = {
@@ -1995,7 +2002,8 @@ ngx_http_uwsgi_merge_loc_conf(ngx_conf_t *cf, void *parent, void *child)
         conf->params_source = prev->params_source;
     }
 
-    rc = ngx_http_uwsgi_init_params(cf, conf, &conf->params, NULL);
+    rc = ngx_http_uwsgi_init_params(cf, conf, &conf->params,
+                                    ngx_http_uwsgi_headers);
     if (rc != NGX_OK) {
         return NGX_CONF_ERROR;
     }