diff --git a/src/http/modules/ngx_http_proxy_module.c b/src/http/modules/ngx_http_proxy_module.c
index f0aadb402..f2d939ed7 100644
--- a/src/http/modules/ngx_http_proxy_module.c
+++ b/src/http/modules/ngx_http_proxy_module.c
@@ -2343,7 +2343,10 @@ ngx_http_proxy_merge_headers(ngx_conf_t *cf, ngx_http_proxy_loc_conf_t *conf,
     }
 
     if (conf->headers_set_hash.buckets
-        && ((conf->upstream.cache == NULL) == (prev->upstream.cache == NULL)))
+#if (NGX_HTTP_CACHE)
+        && ((conf->upstream.cache == NULL) == (prev->upstream.cache == NULL))
+#endif
+       )
     {
         return NGX_OK;
     }
diff --git a/src/http/ngx_http_upstream.c b/src/http/ngx_http_upstream.c
index 87df57169..19b6fb8c7 100644
--- a/src/http/ngx_http_upstream.c
+++ b/src/http/ngx_http_upstream.c
@@ -4086,7 +4086,10 @@ ngx_http_upstream_hide_headers_hash(ngx_conf_t *cf,
         conf->hide_headers_hash = prev->hide_headers_hash;
 
         if (conf->hide_headers_hash.buckets
-            && ((conf->cache == NULL) == (prev->cache == NULL)))
+#if (NGX_HTTP_CACHE)
+            && ((conf->cache == NULL) == (prev->cache == NULL))
+#endif
+           )
         {
             return NGX_OK;
         }