diff --git a/src/http/ngx_http_upstream.c b/src/http/ngx_http_upstream.c
index d3d433b..ef16a66 100644
--- a/src/http/ngx_http_upstream.c
+++ b/src/http/ngx_http_upstream.c
@@ -2922,7 +2922,10 @@
         }
 #endif
 
-        ngx_destroy_pool(u->peer.connection->pool);
+        if (u->peer.connection->pool) {
+            ngx_destroy_pool(u->peer.connection->pool);
+        }
+
         ngx_close_connection(u->peer.connection);
     }
 
@@ -3017,7 +3020,10 @@
                        "close http upstream connection: %d",
                        u->peer.connection->fd);
 
-        ngx_destroy_pool(u->peer.connection->pool);
+        if (u->peer.connection->pool) {
+            ngx_destroy_pool(u->peer.connection->pool);
+        }
+
         ngx_close_connection(u->peer.connection);
     }