diff --git a/design/XFS_Filesystem_Structure/data_extents.asciidoc b/design/XFS_Filesystem_Structure/data_extents.asciidoc
index 4f1109b..29c78fe 100644
--- a/design/XFS_Filesystem_Structure/data_extents.asciidoc
+++ b/design/XFS_Filesystem_Structure/data_extents.asciidoc
@@ -17,7 +17,19 @@
 An extent is 128 bits in size and uses the following packed layout:
 
 .Extent record format
-image::images/31.png[]
+
+[cols="1,1,1,1"]
+|===
+|bit[127]
+|bits[73-126]
+|bits[21-72]
+|bits[0-20]
+
+|flag
+|logical file block offset
+|absolute block number
+|# of blocks
+|===
 
 The extent is represented by the +xfs_bmbt_rec+ structure which uses a big
 endian format on-disk. In-core management of extents use the +xfs_bmbt_irec+
diff --git a/design/XFS_Filesystem_Structure/images/31.png b/design/XFS_Filesystem_Structure/images/31.png
deleted file mode 100644
index 48b0172..0000000
--- a/design/XFS_Filesystem_Structure/images/31.png
+++ /dev/null
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