diff --git a/STM32F1/boards.txt b/STM32F1/boards.txt
index 75d4562..84ce01d 100644
--- a/STM32F1/boards.txt
+++ b/STM32F1/boards.txt
@@ -38,13 +38,13 @@ mapleMini.menu.bootloader_version.bootloader20.upload.maximum_data_size=20480
 mapleMini.menu.bootloader_version.bootloader20.upload.altID=2
 
 #-- CPU Clock frequency
-mapleMini.menu.cpu_speed.speed_72mhz=72Mhz (Normal)
+mapleMini.menu.cpu_speed.speed_72mhz=72MHz (Normal)
 mapleMini.menu.cpu_speed.speed_72mhz.build.f_cpu=72000000L
 
-mapleMini.menu.cpu_speed.speed_48mhz=48Mhz (Slow - with USB)
+mapleMini.menu.cpu_speed.speed_48mhz=48MHz (Slow - with USB)
 mapleMini.menu.cpu_speed.speed_48mhz.build.f_cpu=48000000L
 
-mapleMini.menu.cpu_speed.speed_128mhz=Overclocked 128Mhz NO USB SERIAL. MANUAL RESET NEEDED TO UPLOAD
+mapleMini.menu.cpu_speed.speed_128mhz=Overclocked 128MHz NO USB SERIAL. MANUAL RESET NEEDED TO UPLOAD
 mapleMini.menu.cpu_speed.speed_128mhz.build.f_cpu=128000000L
 
 #-- Optimizations