diff --git a/crypto/Kconfig b/crypto/Kconfig
index 92ba249..9d3a44c 100644
--- a/crypto/Kconfig
+++ b/crypto/Kconfig
@@ -168,6 +168,15 @@
 	  CBC: Cipher Block Chaining mode
 	  This block cipher algorithm is required for IPSec.
 
+config CRYPTO_PCBC
+	tristate "PCBC support"
+	select CRYPTO_BLKCIPHER
+	select CRYPTO_MANAGER
+	default m
+	help
+	  PCBC: Propagating Cipher Block Chaining mode
+	  This block cipher algorithm is required for RxRPC.
+
 config CRYPTO_LRW
 	tristate "LRW support (EXPERIMENTAL)"
 	depends on EXPERIMENTAL