diff --git a/flight/targets/boards/spracingf3evo/board_hw_defs.c b/flight/targets/boards/spracingf3evo/board_hw_defs.c
index 035b3301e..b614f77fb 100644
--- a/flight/targets/boards/spracingf3evo/board_hw_defs.c
+++ b/flight/targets/boards/spracingf3evo/board_hw_defs.c
@@ -510,46 +510,18 @@ const struct pios_servo_cfg pios_servo_cfg = {
 #if defined(PIOS_INCLUDE_PPM)
 #include <pios_ppm_priv.h>
 
-static const struct pios_tim_channel pios_tim_ppm_uart[] = {
-    TIM_SERVO_CHANNEL_CONFIG(TIM2, 4, A, 10),
-    TIM_SERVO_CHANNEL_CONFIG(TIM8, 1, A, 15),
-    TIM_SERVO_CHANNEL_CONFIG(TIM2, 4, B, 11)
-};
+static const struct pios_tim_channel pios_tim_ppm = TIM_SERVO_CHANNEL_CONFIG(TIM8, 1, A, 15);
 
-const struct pios_ppm_cfg pios_ppm_uart_cfg[] = {
-    [0] = {
-        .tim_ic_init         = {
-            .TIM_ICPolarity  = TIM_ICPolarity_Rising,
-            .TIM_ICSelection = TIM_ICSelection_DirectTI,
-            .TIM_ICPrescaler = TIM_ICPSC_DIV1,
-            .TIM_ICFilter    = 0x0,
-        },
-        /* Use only the first channel for ppm */
-        .channels     = &pios_tim_ppm_uart[0],
-        .num_channels = 1,
-    },
-    [1] = {
-        .tim_ic_init         = {
-            .TIM_ICPolarity  = TIM_ICPolarity_Rising,
-            .TIM_ICSelection = TIM_ICSelection_DirectTI,
-            .TIM_ICPrescaler = TIM_ICPSC_DIV1,
-            .TIM_ICFilter    = 0x0,
-        },
-        /* Use only the first channel for ppm */
-        .channels     = &pios_tim_ppm_uart[1],
-        .num_channels = 1,
-    },
-    [2] = {
-        .tim_ic_init         = {
-            .TIM_ICPolarity  = TIM_ICPolarity_Rising,
-            .TIM_ICSelection = TIM_ICSelection_DirectTI,
-            .TIM_ICPrescaler = TIM_ICPSC_DIV1,
-            .TIM_ICFilter    = 0x0,
-        },
-        /* Use only the first channel for ppm */
-        .channels     = &pios_tim_ppm_uart[2],
-        .num_channels = 1,
+const struct pios_ppm_cfg pios_ppm_cfg = {
+    .tim_ic_init         = {
+        .TIM_ICPolarity  = TIM_ICPolarity_Rising,
+        .TIM_ICSelection = TIM_ICSelection_DirectTI,
+        .TIM_ICPrescaler = TIM_ICPSC_DIV1,
+        .TIM_ICFilter    = 0x0,
     },
+    /* Use only the first channel for ppm */
+    .channels     = &pios_tim_ppm,
+    .num_channels = 1,
 };
 #endif /* PIOS_INCLUDE_PPM */
 
diff --git a/flight/targets/boards/spracingf3evo/firmware/pios_board.c b/flight/targets/boards/spracingf3evo/firmware/pios_board.c
index af9dfda79..12876fdcd 100644
--- a/flight/targets/boards/spracingf3evo/firmware/pios_board.c
+++ b/flight/targets/boards/spracingf3evo/firmware/pios_board.c
@@ -214,19 +214,15 @@ void PIOS_Board_Init(void)
         [HWSPRACINGF3EVOSETTINGS_UARTPORT_MAVLINK] = PIOS_BOARD_IO_UART_MAVLINK,
     };
 
-    const struct pios_ppm_cfg *ppm_cfg = 0;
-
     for (unsigned int i = 0; i < HWSPRACINGF3EVOSETTINGS_UARTPORT_NUMELEM; ++i) {
         if(boardHwSettings.UARTPort[i] < NELEMENTS(uart_function_map)) {
             PIOS_BOARD_IO_Configure_UART(&pios_usart_cfg[i], uart_function_map[boardHwSettings.UARTPort[i]]);
-            if(boardHwSettings.UARTPort[i] == HWSPRACINGF3EVOSETTINGS_UARTPORT_PPM) {
-                ppm_cfg = &pios_ppm_uart_cfg[i];
-            }
         }
     }
     
-    if(ppm_cfg) {
-        PIOS_BOARD_IO_Configure_PPM_RCVR(ppm_cfg);
+    /* allow PPM on uart2 only, to avoid uart1&3 TIM2_CH4 conflict with output PWMSync, OneShot and MultiShot modes */
+    if(boardHwSettings.UARTPort[1] == HWSPRACINGF3EVOSETTINGS_UARTPORT_PPM) {
+        PIOS_BOARD_IO_Configure_PPM_RCVR(&pios_ppm_cfg);
     }
 
 #ifndef PIOS_ENABLE_DEBUG_PINS
diff --git a/shared/uavobjectdefinition/hwspracingf3evosettings.xml b/shared/uavobjectdefinition/hwspracingf3evosettings.xml
index 999e74af8..a20fe20e6 100644
--- a/shared/uavobjectdefinition/hwspracingf3evosettings.xml
+++ b/shared/uavobjectdefinition/hwspracingf3evosettings.xml
@@ -1,7 +1,7 @@
 <xml>
     <object name="HwSPRacingF3EVOSettings" singleinstance="true" settings="true" category="System">
         <description>Seriously Pro SPRacingF3 EVO hardware configuration.</description>
-        <field name="UARTPort" units="function" type="enum" elements="3" options="Disabled,Telemetry,GPS,S.Bus,DSM,EX.Bus,HoTT SUMD,HoTT SUMH,SRXL,IBus,DebugConsole,ComBridge,MSP,MAVLink,PPM" defaultvalue="Disabled"/>
+        <field name="UARTPort" units="function" type="enum" elements="3" options="Disabled,Telemetry,GPS,S.Bus,DSM,EX.Bus,HoTT SUMD,HoTT SUMH,SRXL,IBus,DebugConsole,ComBridge,MSP,MAVLink,PPM" defaultvalue="Disabled" limits="%NE:PPM;;%NE:PPM"/>
         <field name="I2CPort" units="function" type="enum" elements="1" options="Disabled,I2C" defaultvalue="Disabled"/>
         <field name="LEDPort" units="function" type="enum" elements="1" options="Disabled,WS2811,Output" defaultvalue="Disabled"/>
         <field name="BuzzerPort" units="function" type="enum" elements="1" options="Disabled,Output" defaultvalue="Disabled"/>