diff --git a/src/3P/mountd/mount.c b/src/3P/mountd/mount.c
index 1d581ea2..38ccb8e6 100644
--- a/src/3P/mountd/mount.c
+++ b/src/3P/mountd/mount.c
@@ -394,7 +394,7 @@ static char* mount_get_serial(char *dev)
 				{
 					int id;
 					struct stat buf;
-					char tmp3[64];
+					char tmp3[286];
 					int ret;
 					*t = 0;
 					id = atoi(namelist[n]->d_name);