diff --git a/testhal/STM32F4xx/EXT/main.c b/testhal/STM32F4xx/EXT/main.c
index 9b9956bdc..e79618715 100644
--- a/testhal/STM32F4xx/EXT/main.c
+++ b/testhal/STM32F4xx/EXT/main.c
@@ -100,10 +100,8 @@ int main(void) {
    * button EXT channel using 5 seconds intervals.
    */
   while (TRUE) {
-    EXTI->SWIER = 64;
     chThdSleepMilliseconds(5000);
     extChannelDisable(&EXTD1, 0);
-    EXTI->SWIER = 64;
     chThdSleepMilliseconds(5000);
     extChannelEnable(&EXTD1, 0);
   }