diff --git a/inc/neopixel.h b/inc/neopixel.h
index 1a7ee4b1..9a89be64 100644
--- a/inc/neopixel.h
+++ b/inc/neopixel.h
@@ -66,9 +66,11 @@ static inline void neopixel_send_buffer(const uint8_t *ptr, int numBytes) {
 
     PINOP(BOARD_NEOPIXEL_PIN, DIRSET);
 
-    // turn off mux too, needed for metro m0 but no harm done!
+#if (USB_VID == 0x239a) && (USB_PID == 0x0013)  // Adafruit Metro M0
+    // turn off mux too, needed for metro m0
     PORT->Group[BOARD_NEOPIXEL_PIN / 32].PINCFG[BOARD_NEOPIXEL_PIN % 32].reg =
         (uint8_t)(PORT_PINCFG_INEN);
+#endif
 
     PINOP(BOARD_NEOPIXEL_PIN, OUTCLR);
     delay(1);
diff --git a/src/main.c b/src/main.c
index 97ce0fd9..cdcfcbd6 100644
--- a/src/main.c
+++ b/src/main.c
@@ -164,7 +164,7 @@ int main(void) {
 
 #if (USB_VID == 0x239a) && (USB_PID == 0x0013)  // Adafruit Metro M0
     // Delay a bit so SWD programmer can have time to attach.
-    delay(100);
+    delay(15);
 #endif
     led_init();