diff --git a/src/classic/rfcomm.c b/src/classic/rfcomm.c
index cafb290a2..b831caee3 100644
--- a/src/classic/rfcomm.c
+++ b/src/classic/rfcomm.c
@@ -2550,10 +2550,12 @@ uint8_t rfcomm_create_channel(btstack_packet_handler_t packet_handler, bd_addr_t
 }
 
 uint8_t rfcomm_disconnect(uint16_t rfcomm_cid){
-    log_info("disconnect cid 0x%02x", rfcomm_cid);
     rfcomm_channel_t * channel = rfcomm_channel_for_rfcomm_cid(rfcomm_cid);
     if (!channel) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER;
 
+    if (channel->state != RFCOMM_CHANNEL_OPEN) return ERROR_CODE_COMMAND_DISALLOWED;
+
+    log_info("disconnect cid 0x%02x", rfcomm_cid);
     channel->state = RFCOMM_CHANNEL_SEND_DISC;
     l2cap_request_can_send_now_event(channel->multiplexer->l2cap_cid);
     return ERROR_CODE_SUCCESS;