diff --git a/src/drivers/px4fmu/fmu.cpp b/src/drivers/px4fmu/fmu.cpp
index 7f77a0450d..4e18fde300 100644
--- a/src/drivers/px4fmu/fmu.cpp
+++ b/src/drivers/px4fmu/fmu.cpp
@@ -902,7 +902,6 @@ PX4FMU::cycle()
 		sbus_config(_rcs_fd, false);
 		// disable CPPM input by mapping it away from the timer capture input
 		stm32_unconfiggpio(GPIO_PPM_IN);
-		stm32_configgpio(GPIO_PPM_IN & ~(GPIO_AF_MASK | GPIO_PUPD_MASK));
 #endif
 
 		_initialized = true;
@@ -1333,7 +1332,6 @@ PX4FMU::cycle()
 		} else {
 			// disable CPPM input by mapping it away from the timer capture input
 			stm32_unconfiggpio(GPIO_PPM_IN);
-			stm32_configgpio(GPIO_PPM_IN & ~(GPIO_AF_MASK | GPIO_PUPD_MASK));
 			// Scan the next protocol
 			set_rc_scan_state(RC_SCAN_SBUS);
 		}