diff --git a/docs/pid_tuning.md b/docs/pid_tuning.md
index 28510bf..274e1f2 100644
--- a/docs/pid_tuning.md
+++ b/docs/pid_tuning.md
@@ -1,4 +1,4 @@
-Tuning PID Vaules
+Tuning PID Values
 =================
 
 ![Image](https://upload.wikimedia.org/wikipedia/commons/3/33/PID_Compensation_Animated.gif)