diff --git a/libraries/Servo/src/Servo.h b/libraries/Servo/src/Servo.h
index 5e52aba3da..162f9fff2d 100644
--- a/libraries/Servo/src/Servo.h
+++ b/libraries/Servo/src/Servo.h
@@ -110,8 +110,9 @@ class Servo {
     int read();                        // returns current pulse width as an angle between 0 and 180 degrees
     int readMicroseconds();            // returns current pulse width in microseconds for this servo (was read_us() in first release)
     bool attached();                   // return true if this servo is attached, otherwise false
-  private:
+  protected:
     uint8_t servoIndex;               // index into the channel data for this servo
+  private:
     int8_t min;                       // minimum is this value times 4 added to MIN_PULSE_WIDTH
     int8_t max;                       // maximum is this value times 4 added to MAX_PULSE_WIDTH
 };
diff --git a/libraries/Servo/src/stm32/Servo.cpp b/libraries/Servo/src/stm32/Servo.cpp
index 2202d2a6be..484f4657e9 100644
--- a/libraries/Servo/src/stm32/Servo.cpp
+++ b/libraries/Servo/src/stm32/Servo.cpp
@@ -29,7 +29,7 @@ static volatile int8_t timerChannel[_Nbr_16timers] = {-1}; // counter for the se
 
 static HardwareTimer TimerServo(TIMER_SERVO);
 
-uint8_t ServoCount = 0;                                    // the total number of attached servos
+static uint8_t ServoCount = 0;                                    // the total number of attached servos
 
 #define SERVO_MIN() (MIN_PULSE_WIDTH - this->min * 4)   // minimum value in uS for this servo
 #define SERVO_MAX() (MAX_PULSE_WIDTH - this->max * 4)   // maximum value in uS for this servo