diff --git a/openbsc/src/gsm_04_11.c b/openbsc/src/gsm_04_11.c
index c46f772..4ef9ee7 100644
--- a/openbsc/src/gsm_04_11.c
+++ b/openbsc/src/gsm_04_11.c
@@ -1126,6 +1126,7 @@
 		break;
 	case GSM_PAGING_EXPIRED:
 	case GSM_PAGING_OOM:
+	case GSM_PAGING_BUSY:
 		sms_free(sms);
 		rc = -ETIMEDOUT;
 		break;