diff --git a/magic/Magdir/filesystems b/magic/Magdir/filesystems
index 8d60f69..50dae60 100644
--- a/magic/Magdir/filesystems
+++ b/magic/Magdir/filesystems
@@ -1468,9 +1468,13 @@
# From Eric Sandeen
# GFS2
-0x10000 belong 0x01161970 GFS2 Filesystem
->0x10024 belong x (blocksize %d,
->0x10060 string >\0 lockproto %s)
+0x10000 belong 0x01161970
+>0x10018 belong 0x0000051d GFS1 Filesystem
+>>0x10024 belong x (blocksize %d,
+>>0x10060 string >\0 lockproto %s)
+>0x10018 belong 0x00000709 GFS2 Filesystem
+>>0x10024 belong x (blocksize %d,
+>>0x10060 string >\0 lockproto %s)
# BTRFS
0x10040 string _BHRfS_M BTRFS Filesystem