diff --git a/CREDITS b/CREDITS
index 96935df..843e176 100644
--- a/CREDITS
+++ b/CREDITS
@@ -187,6 +187,10 @@
 E: balasub@cis.ohio-state.edu
 D: Wrote SYS V IPC (part of standard kernel since 0.99.10)
 
+N: Chris Ball
+E: chris@printf.net
+D: Former maintainer of the MMC/SD/SDIO subsystem.
+
 N: Dario Ballabio
 E: ballabio_dario@emc.com
 E: dario.ballabio@tiscalinet.it