diff --git a/sw/airborne/boards/bebop/mt9v117.c b/sw/airborne/boards/bebop/mt9v117.c
index a99d6caaf5..3fd2a04e48 100644
--- a/sw/airborne/boards/bebop/mt9v117.c
+++ b/sw/airborne/boards/bebop/mt9v117.c
@@ -362,19 +362,30 @@ static inline void mt9v117_config(struct mt9v117_t *mt) {
  */
 void mt9v117_init(struct mt9v117_t *mt)
 {
+  /* bytes written to gpios/pwm */
+  int wc = 0;
   /* Reset the device */
   int gpio129 = open("/sys/class/gpio/gpio129/value", O_WRONLY | O_CREAT | O_TRUNC, 0666);
-  (void)write(gpio129, "0", 1);
-  (void)write(gpio129, "1", 1);
+  wc += write(gpio129, "0", 1);
+  wc += write(gpio129, "1", 1);
   close(gpio129);
 
+  if (wc != 2) {
+    printf("[MT9V117] Couldn't write to GPIO 129\n");
+  }
+
   /* Start PWM 9 (Which probably is the clock of the MT9V117) */
   //#define BEBOP_CAMV_PWM_FREQ 43333333
   int pwm9 = open("/sys/class/pwm/pwm_9/run", O_WRONLY | O_CREAT | O_TRUNC, 0666);
-  (void)write(pwm9, "0", 1);
-  (void)write(pwm9, "1", 1);
+  wc = 0;
+  wc += write(pwm9, "0", 1);
+  wc += write(pwm9, "1", 1);
   close(pwm9);
 
+  if (wc != 2) {
+    printf("[MT9V117] Couldn't write to PWM\n");
+  }
+
   //TODO: Make PWM and GPIO generic
 
   /* Wait 50ms */