diff --git a/common/app/pixy_control.c b/common/app/pixy_control.c
index 8e0d8e9..5786e7a 100644
--- a/common/app/pixy_control.c
+++ b/common/app/pixy_control.c
@@ -28,10 +28,10 @@ void int_init(void){
 // PID controller implementatoin for the y-axis
 int16_t pixy_PID_Y(int16_t x, int16_t w)
 {
-    float e;
-    static float esum;
-    static float eold;
-    float y;
+    float e = 0;
+    static float esum = 0;
+    static float eold = 0;
+    float y = 0;
 
     e = (float)(x - w);                         // calculate the controller offset
 
@@ -45,16 +45,16 @@ int16_t pixy_PID_Y(int16_t x, int16_t w)
 
     eold = e;                                   // save the previous value
 
-    return (int16_t) y;
+    return (int16_t)y;
 }
 
 // PID controller implementation for the x-axis
 int16_t pixy_PID_X(int16_t x, int16_t w)
 {
-    float e;
-    static float esum;
-    static float eold;
-    float y;
+    float e = 0;
+    static float esum = 0;
+    static float eold = 0;
+    float y = 0;
 
     e = (float)(x - w);                         // calculate the controller offset
 
@@ -68,5 +68,5 @@ int16_t pixy_PID_X(int16_t x, int16_t w)
 
     eold = e;                                   // save the previous value
 
-    return (int16_t) y;
+    return (int16_t)y;
 }
diff --git a/common/app/screen_tracking.c b/common/app/screen_tracking.c
index 1a3daf5..508c8b3 100644
--- a/common/app/screen_tracking.c
+++ b/common/app/screen_tracking.c
@@ -91,8 +91,8 @@ void tracking_our_start(void* tracking_config) {
 	int return_value;
 
     servo_x = servo_y = 500;                // set a default value of 500
-    pixy_rcs_set_position(0, servo_x);      //  
-    pixy_rcs_set_position(1, servo_y);      //
+    pixy_rcs_set_position(0, servo_x);      // set default 
+    pixy_rcs_set_position(1, servo_y);      // set default
 
 	return_value = pixy_command("runprog", INT8(0), END_OUT_ARGS,  &response, END_IN_ARGS);
 }