diff --git a/macros/src/codegen/pre_init.rs b/macros/src/codegen/pre_init.rs
index 626d17a0a6..69f16fe376 100644
--- a/macros/src/codegen/pre_init.rs
+++ b/macros/src/codegen/pre_init.rs
@@ -32,7 +32,7 @@ pub fn codegen(app: &App, analysis: &Analysis, extra: &Extra) -> Vec<TokenStream
     let nvic_prio_bits = quote!(#device::NVIC_PRIO_BITS);
 
     // check that all dispatchers exists in the `Interrupt` enumeration regardless of whether
-    // they are used or not 
+    // they are used or not
     let interrupt = util::interrupt_ident();
     for name in app.args.extern_interrupts.keys() {
         stmts.push(quote!(let _ = #rt_err::#interrupt::#name;));