diff --git a/channels/chan_sip.c b/channels/chan_sip.c
index cd09992d2e..def3620b6f 100644
--- a/channels/chan_sip.c
+++ b/channels/chan_sip.c
@@ -15487,6 +15487,9 @@ static void *do_monitor(void *data)
 					sipsock_read_id = ast_io_change(io, sipsock_read_id, sipsock, NULL, 0, NULL);
 				else
 					sipsock_read_id = ast_io_add(io, sipsock, sipsock_read, AST_IO_IN, NULL);
+			} else if (sipsock_read_id) {
+				ast_io_remove(io, sipsock_read_id);
+				sipsock_read_id = NULL;
 			}
 		}
 		/* Check for interfaces needing to be killed */