diff --git a/kern/conf/DUMBVM b/kern/conf/DUMBVM
index d658cf6..435603e 100644
--- a/kern/conf/DUMBVM
+++ b/kern/conf/DUMBVM
@@ -5,7 +5,7 @@ include conf/conf.kern		# get definitions of available options
 
 debug				# Compile with debug info and -Og.
 #debugonly			# Compile with debug info only (no -Og).
-options hangman 		# Deadlock detection. (off by default)
+#options hangman 		# Deadlock detection. (off by default)
 
 #
 # Device drivers for hardware.