diff --git a/README.md b/README.md
index 20be2bf..95aff2c 100644
--- a/README.md
+++ b/README.md
@@ -6,7 +6,7 @@
 
 ## Features
 
-* Simple and clear Arduino based source code.
+* Simple and clean Arduino based source code.
 * Acro and Stabilized flight using remote control.
 * Precise simulation using Gazebo.
 * In-RAM logging.
diff --git a/flix/estimate.ino b/flix/estimate.ino
index 6302e9f..6919dcf 100644
--- a/flix/estimate.ino
+++ b/flix/estimate.ino
@@ -7,8 +7,6 @@
 #include "vector.h"
 
 #define ONE_G 9.807f
-#define ACC_MIN 0.9f
-#define ACC_MAX 1.1f
 #define WEIGHT_ACC 0.5f
 
 void estimate()