1 files changed, 4 insertions, 2 deletions
diff --git a/examples/capacity.rs b/examples/capacity.rs
index e50f9294..00cec344 100644
--- a/examples/capacity.rs
+++ b/examples/capacity.rs
@@ -38,8 +38,10 @@ const APP: () = {
         debug::exit(debug::EXIT_SUCCESS);
     }
 
-    // Interrupt handlers used to dispatch software tasks
+    // RTIC requires that unused interrupts are declared in an extern block when
+    // using software tasks; these free interrupts will be used to dispatch the
+    // software tasks.
     extern "C" {
-        fn UART1();
+        fn SSI0();
     }
 };