diff --git a/target/linux/generic/patches-2.6.39/030-exportfs_tristate.patch b/target/linux/generic/patches-2.6.39/030-exportfs_tristate.patch
new file mode 100644
index 0000000000..b34f487be0
--- /dev/null
+++ b/target/linux/generic/patches-2.6.39/030-exportfs_tristate.patch
@@ -0,0 +1,11 @@
+--- a/fs/Kconfig
++++ b/fs/Kconfig
+@@ -47,7 +47,7 @@ config FS_POSIX_ACL
+ 	def_bool n
+ 
+ config EXPORTFS
+-	bool
++	tristate
+ 
+ config FILE_LOCKING
+ 	bool "Enable POSIX file locking API" if EXPERT