diff --git a/keil_project/Services/Accelerometer.c b/keil_project/Services/Accelerometer.c
index a140276..4a09e07 100644
--- a/keil_project/Services/Accelerometer.c
+++ b/keil_project/Services/Accelerometer.c
@@ -73,9 +73,9 @@ double ACCELEROMETER_GetY(void){
 int ACCELEROMETER_AngleGood(void){
 	double x = ACCELEROMETER_GetX();
 	double y = ACCELEROMETER_GetY();
-	double angle = x/y;
+	double angle = atan(x/y);
 	
-	if (angle>tan(ANGLE_LIMIT_RAD)){
+	if (fabs(angle)>ANGLE_LIMIT_RAD){
 		return 0;
 	}else {
 		return 1;