diff --git a/AUTHORS b/AUTHORS
index 6ec8e46..5502d41 100644
--- a/AUTHORS
+++ b/AUTHORS
@@ -65,6 +65,9 @@
 also made a bunch of performance and memory-reduction fixes across
 diverse parts of the system.
 
+Maynard Johnson contributed IBM Power6 and Power7 support, and generally
+deals with ppc64-linux issues.
+
 Many, many people sent bug reports, patches, and helpful feedback.
 
 Development of Valgrind was supported in part by the Tri-Lab Partners