diff --git a/README.md b/README.md
index 53638c5..8f29a15 100644
--- a/README.md
+++ b/README.md
@@ -1,7 +1,7 @@
 Arduino firmware, documentation and PC executable for my WSPR transmitters.
 More info at www.zachtek.com
 
-Firmware version 1.xx for WSPR transmitters with hardware version 1.xx. These are ATMega328 based.
-Frimware version 2.xx for WSPR transmitters with hardware version 2.xx. These are ESP8285 based.
+Firmware version 1:xx for WSPR transmitters with hardware version 1.xx. These are ATMega328 based.
+Frimware version 2:xx for WSPR transmitters with hardware version 2.xx. These are ESP8285 based.