diff --git a/docs/changes.xml b/docs/changes.xml
index 7c0712f3f..e37c82195 100644
--- a/docs/changes.xml
+++ b/docs/changes.xml
@@ -37,6 +37,12 @@ fix HTTP cookie parsing when the value contains an equals sign.
 </para>
 </change>
 
+<change type="bugfix">
+<para>
+fix error in connection statistics when using proxy.
+</para>
+</change>
+
 </changes>
 
 
diff --git a/src/nxt_conn.h b/src/nxt_conn.h
index 8a703e9a2..5717d3c99 100644
--- a/src/nxt_conn.h
+++ b/src/nxt_conn.h
@@ -312,8 +312,7 @@ NXT_EXPORT void nxt_event_conn_job_sendfile(nxt_task_t *task,
                                                                               \
         nxt_queue_remove(&c->link);                                           \
                                                                               \
-        c->idle = 0;                                                          \
-        e->idle_conns_cnt--;                                                  \
+        e->idle_conns_cnt -= c->idle;                               \
     } while (0)
 
 
diff --git a/src/nxt_conn_close.c b/src/nxt_conn_close.c
index 92bd8d1b9..bdd669515 100644
--- a/src/nxt_conn_close.c
+++ b/src/nxt_conn_close.c
@@ -119,7 +119,9 @@ nxt_conn_close_handler(nxt_task_t *task, void *obj, void *data)
         nxt_socket_close(task, c->socket.fd);
         c->socket.fd = -1;
 
-        engine->closed_conns_cnt++;
+        if (c->idle) {
+            engine->closed_conns_cnt++;
+        }
 
         if (timers_pending == 0) {
             nxt_work_queue_add(&engine->fast_work_queue,
@@ -155,7 +157,9 @@ nxt_conn_close_timer_handler(nxt_task_t *task, void *obj, void *data)
         nxt_socket_close(task, c->socket.fd);
         c->socket.fd = -1;
 
-        engine->closed_conns_cnt++;
+        if (c->idle) {
+            engine->closed_conns_cnt++;
+        }
     }
 
     nxt_work_queue_add(&engine->fast_work_queue, c->write_state->ready_handler,