diff --git a/README.md b/README.md
index 688b38029..1507f4de0 100644
--- a/README.md
+++ b/README.md
@@ -21,7 +21,7 @@ including
   - CBM 510 (aka P500)
   - the 600/700 family
   - newer PET machines (not 2001).
-- the Apple ][+ and successors.
+- the Apple ]\[+ and successors.
 - the Atari 8 bit machines.
 - the Atari 5200 console.
 - GEOS for the C64, C128 and Apple //e.