diff --git a/src/lib.rs b/src/lib.rs
index 5864c15..5cf50f4 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -134,8 +134,12 @@ impl<const L: usize> UsbBus for UsbDevice<L> {
             let udcon = &self.usb.borrow(cs).udcon;
 
             udcon.modify(|_, w| w.detach().set_bit());
+        });
 
-            delay_cycles(ONE_MS_16_MGHZ);
+        delay_cycles(ONE_MS_16_MGHZ);
+
+        free(|cs| {
+            let udcon = &self.usb.borrow(cs).udcon;
 
             udcon.modify(|_, w| w.detach().clear_bit());
         });