diff --git a/src/sgsn/sgsn_vty.c b/src/sgsn/sgsn_vty.c
index 33a652c..fee328e 100644
--- a/src/sgsn/sgsn_vty.c
+++ b/src/sgsn/sgsn_vty.c
@@ -1020,6 +1020,10 @@
 	}
 
 	subscr = gprs_subscr_get_or_create(imsi);
+	if (!subscr) {
+		vty_out(vty, "Can not create subscriber. Out of memory.%s", imsi);
+		return CMD_WARNING;
+	}
 	subscr->keep_in_ram = 1;
 	gprs_subscr_put(subscr);