diff --git a/doc/4-instrument/psg.md b/doc/4-instrument/psg.md
index 96775bc09..15bb8ff8b 100644
--- a/doc/4-instrument/psg.md
+++ b/doc/4-instrument/psg.md
@@ -1,4 +1,4 @@
-# PSG instrument editor
+# Sega PSG instrument editor
 
 The instrument editor for Sega PSG (SMS, and other TI SN76489 derivatives) consists of these macros: