diff -Nur linux-2.6.37.orig/lib/Kconfig linux-2.6.37/lib/Kconfig
--- linux-2.6.37.orig/lib/Kconfig	2011-01-05 01:50:19.000000000 +0100
+++ linux-2.6.37/lib/Kconfig	2011-03-01 20:10:29.833370667 +0100
@@ -95,7 +95,7 @@
 # compression support is select'ed if needed
 #
 config ZLIB_INFLATE
-	tristate
+	boolean
 
 config ZLIB_DEFLATE
 	tristate
