diff --git a/doc/7-systems/README.md b/doc/7-systems/README.md
index e768ec094..53be263ea 100644
--- a/doc/7-systems/README.md
+++ b/doc/7-systems/README.md
@@ -73,7 +73,7 @@ this is the full list of chips that Furnace supports.
 - [FDS](fds.md)
 - [Game Boy](game-boy.md)
 - [Generic PCM DAC](dac.md)
-- Irem GA20
+- [Irem GA20](ga20.md)
 - [Bubble System WSG](bubblesystem.md)
 - [K007232](k007232.md)
 - [K053260](k056320.md)
@@ -119,4 +119,4 @@ this is the full list of chips that Furnace supports.
 - [YMZ280B](ymz280b.md)
 - [ZX Spectrum Beeper](zxbeep.md)
 
-Furnace also reads .dmf files with the [Yamaha YMU759](ymu759.md) system, but...
\ No newline at end of file
+Furnace also reads .dmf files with the [Yamaha YMU759](ymu759.md) system, but...