diff --git a/README.md b/README.md
index be46461..d37be12 100644
--- a/README.md
+++ b/README.md
@@ -3,4 +3,4 @@ Adapter to use EPROM as a replacement of PROM, commonly used for Commodore 64 KE
 
 I use it with my EPROM Emulator. 
 
-Inspired by SukkoPera/Open2327RomAdapter but with resistors placed on top layer to protect bottom layer from screwdriver that I often use to remove the EPROM from the socket. Added standard 2.54mm header for option extension of A13-A15 lines, solder pads nicely spaced to allow soldering of extention cable for switchable images.
+Inspired by SukkoPera/Open2327RomAdapter but with resistors placed on top layer to protect bottom layer from screwdriver that I often use to remove the EPROM from the socket. Added standard 2.54mm header for optional extension of A13-A15 lines, solder pads nicely spaced to allow soldering of extention cable for switchable images.