diff --git a/radio/src/targets/common/arm/stm32/sticks_pwm_driver.cpp b/radio/src/targets/common/arm/stm32/sticks_pwm_driver.cpp
index 7563ab7a1..9ef69c6e8 100644
--- a/radio/src/targets/common/arm/stm32/sticks_pwm_driver.cpp
+++ b/radio/src/targets/common/arm/stm32/sticks_pwm_driver.cpp
@@ -21,7 +21,7 @@
 
 #include "opentx.h"
 
-volatile uint32_t pwm_interrupt_count;
+volatile uint32_t pwm_interrupt_count = 0;
 volatile uint16_t timer_capture_values[NUM_PWMSTICKS];
 
 void sticksPwmInit()