diff --git a/[refs] b/[refs]
index 1ab306532863..7b89970a6e13 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 5e8898e97a5db4125d944070922164d1d09a2689
+refs/heads/master: be440ec77325d02ad5e43676eb8d868426d35cd5
diff --git a/trunk/lib/Kconfig b/trunk/lib/Kconfig
index 854735d96dc3..dbaf19ea84e8 100644
--- a/trunk/lib/Kconfig
+++ b/trunk/lib/Kconfig
@@ -304,7 +304,8 @@ config MPILIB_EXTRA
 
 config SIGNATURE
 	tristate "In-kernel signature checker"
-	depends on KEYS
+	depends on KEYS && CRYPTO
+	select CRYPTO_SHA1
 	select MPILIB
 	help
 	  Digital signature verification. Currently only RSA is supported.