Index: usr.sbin/bhyve/smbiostbl.c
===================================================================
--- usr.sbin/bhyve/smbiostbl.c
+++ usr.sbin/bhyve/smbiostbl.c
@@ -38,6 +38,7 @@
 #include <string.h>
 #include <unistd.h>
 #include <uuid.h>
+#include <stdlib.h>
 
 #include <machine/vmm.h>
 #include <vmmapi.h>
@@ -598,8 +599,10 @@
 		uint32_t	status;
 
 		uuid_from_string(guest_uuid_str, &uuid, &status);
-		if (status != uuid_s_ok)
-			return (-1);
+		if (status != uuid_s_ok) {
+			fprintf(stderr, "Invalid UUID provided\n");
+			exit(4);
+		}
 
 		uuid_enc_le(&type1->uuid, &uuid);
 	} else {