diff --git a/README.md b/README.md
index 66681ff..05a4985 100644
--- a/README.md
+++ b/README.md
@@ -2,7 +2,7 @@
 
 This is a script to control screen brightness on Lenovo ThinkPad X220 and similar after you changed PWM frequency by writing a custom value to 0xC8254 register. I use it with acpid.
 
-The script reads current PWM frequency from the register, calculates correct new brightness level for `/sys/class/backlight/intel_backlight/brighness` and writes it.
+The script reads current PWM frequency from the register, calculates correct new brightness level for `/sys/class/backlight/intel_backlight/brightness` and writes it.
 
 ### Usage