diff --git a/Production/Firmware/chu_pico.uf2 b/Production/Firmware/chu_pico.uf2
index 4fef43a..f2b9d1f 100644
Binary files a/Production/Firmware/chu_pico.uf2 and b/Production/Firmware/chu_pico.uf2 differ
diff --git a/firmware/src/slider.c b/firmware/src/slider.c
index fd6d9ed..45b8c77 100644
--- a/firmware/src/slider.c
+++ b/firmware/src/slider.c
@@ -30,7 +30,7 @@ static bool present[3];
 void slider_sensor_init()
 {
     for (int m = 0; m < 3; m++) {
-        mpr121_init(MPR121_ADDR + m);
+        present[m] = mpr121_init(MPR121_ADDR + m);
     }
     slider_update_config();
 }