diff --git a/examples/device.rs b/examples/device.rs
index 8dcff8d..a0dfc26 100644
--- a/examples/device.rs
+++ b/examples/device.rs
@@ -40,7 +40,9 @@ fn main() -> ! {
     let mut syst = p.SYST;
     let mut nvic = p.NVIC;
 
-    nvic.enable(Interrupt::EXTI0);
+    unsafe {
+        nvic.iser[Interrupt::EXTI0 as usize / 32].write(1 << (Interrupt::EXTI0 as usize % 32));
+    }
 
     // configure the system timer to wrap around every second
     syst.set_clock_source(SystClkSource::Core);