diff --git a/radio/src/targets/horus/extmodule_driver.cpp b/radio/src/targets/horus/extmodule_driver.cpp
index fe3d2cb63..99c5f811f 100644
--- a/radio/src/targets/horus/extmodule_driver.cpp
+++ b/radio/src/targets/horus/extmodule_driver.cpp
@@ -176,7 +176,7 @@ void extmoduleSerialStart(uint32_t /*baudrate*/, uint32_t period_half_us, bool i
   EXTMODULE_TIMER->CCMR1 = TIM_CCMR1_OC1M_1 | TIM_CCMR1_OC1M_0;
 #endif
 
-  EXTMODULE_TIMER->ARR = period_half_us;
+  EXTMODULE_TIMER->ARR = 45000;
   EXTMODULE_TIMER->CCR2 = 40000; // The first frame will be sent in 20ms
   EXTMODULE_TIMER->SR &= ~TIM_SR_CC2IF; // Clear flag
   EXTMODULE_TIMER->DIER |= TIM_DIER_UDE | TIM_DIER_CC2IE;
diff --git a/radio/src/targets/horus/pwr_driver.cpp b/radio/src/targets/horus/pwr_driver.cpp
index fd8c7b110..0a4ad4846 100644
--- a/radio/src/targets/horus/pwr_driver.cpp
+++ b/radio/src/targets/horus/pwr_driver.cpp
@@ -53,14 +53,10 @@ void pwrInit()
   GPIO_Init(PWR_SWITCH_GPIO, &GPIO_InitStructure);
 
   // PCBREV
-#if defined(PCBX10)
+#if defined(PCBREV_GPIO_PIN)
   GPIO_InitStructure.GPIO_Pin = PCBREV_GPIO_PIN;
   GPIO_Init(PCBREV_GPIO, &GPIO_InitStructure);
   hardwareOptions.pcbrev = PCBREV_VALUE();
-#else
-  GPIO_ResetBits(PCBREV_GPIO, PCBREV_GPIO_PIN);
-  GPIO_InitStructure.GPIO_Pin = PCBREV_GPIO_PIN;
-  GPIO_Init(PCBREV_GPIO, &GPIO_InitStructure);
 #endif
 
   // SD-DETECT PIN