diff --git a/system/hercules/slack-desc b/system/hercules/slack-desc
index 392b7aa31e..e60013d54a 100644
--- a/system/hercules/slack-desc
+++ b/system/hercules/slack-desc
@@ -6,7 +6,7 @@
 # customary to leave one space after the ':' except on otherwise blank lines.
 
         |-----handy-ruler------------------------------------------------------|
-hercules: Hercules (System/370, ESA/390 and z/Architecture Emulator)
+hercules: hercules (System/370, ESA/390 and z/Architecture Emulator)
 hercules:
 hercules: Hercules is an open source software implementation of the mainframe
 hercules: System/370 and ESA/390 architectures, in addition to the new 64-bit