diff --git a/magic/Magdir/adventure b/magic/Magdir/adventure
index 5087ce6..a693213 100644
--- a/magic/Magdir/adventure
+++ b/magic/Magdir/adventure
@@ -18,17 +18,14 @@
 #------------------------------------------------------------------------------
 # Z-machine:  file(1) magic for Z-machine binaries.
 #
-# This will match ${TEX_BASE}/texmf/omega/ocp/char2uni/inbig5.ocp which
-# appears to be a version-0 Z-machine binary.
-#
-# The (false match) message is to correct that behavior.  Perhaps it is
-# not needed.
-#
-16	belong&0xfe00f0f0	0x3030	Infocom game data
->0	ubyte			0	(false match)
->0	ubyte			>0	(Z-machine %d,
->>2	ubeshort		x	Release %d /
->>18	string			>\0	Serial %.6s)
+# The first byte is the Z-machine version number, which is always between
+# 1 and 8.
+0	ubyte			>0
+>0	ubyte			<9
+>>16	belong&0xfe00f0f0	0x3030	Infocom game data
+>>>0	ubyte			>0	(Z-machine %d,
+>>>>2	ubeshort		x	Release %d /
+>>>>18	string			>\0	Serial %.6s)
 
 #------------------------------------------------------------------------------
 # Glulx:  file(1) magic for Glulx binaries.