diff --git a/lib/Kconfig b/lib/Kconfig
index f0df318..1a48744 100644
--- a/lib/Kconfig
+++ b/lib/Kconfig
@@ -210,9 +210,11 @@
 # compression support is select'ed if needed
 #
 config 842_COMPRESS
+	select CRC32
 	tristate
 
 config 842_DECOMPRESS
+	select CRC32
 	tristate
 
 config ZLIB_INFLATE