diff --git a/libosmocore/src/write_queue.c b/libosmocore/src/write_queue.c
index a0ac2d6..618a8c0 100644
--- a/libosmocore/src/write_queue.c
+++ b/libosmocore/src/write_queue.c
@@ -32,6 +32,9 @@
 	if (what & BSC_FD_READ)
 		queue->read_cb(fd);
 
+	if (what & BSC_FD_EXCEPT)
+		queue->except_cb(fd);
+
 	if (what & BSC_FD_WRITE) {
 		struct msgb *msg;