diff --git a/tool/src/demo_gen/mod.rs b/tool/src/demo_gen/mod.rs
index 2d7c31c10..2f21dc40e 100644
--- a/tool/src/demo_gen/mod.rs
+++ b/tool/src/demo_gen/mod.rs
@@ -3,7 +3,10 @@
 //! Designed to work in conjunction with the JS backend.
 //!
 //! See docs/demo_gen.md for more.
-use std::{collections::{BTreeSet, HashMap}, fmt::Write};
+use std::{
+    collections::{BTreeSet, HashMap},
+    fmt::Write,
+};
 
 use askama::{self, Template};
 use diplomat_core::hir::{BackendAttrSupport, TypeContext};
diff --git a/tool/src/demo_gen/terminus.rs b/tool/src/demo_gen/terminus.rs
index d0cd6396e..65352fb8d 100644
--- a/tool/src/demo_gen/terminus.rs
+++ b/tool/src/demo_gen/terminus.rs
@@ -55,7 +55,7 @@ pub(super) struct RenderTerminusContext<'ctx, 'tcx> {
     pub terminus_info: TerminusInfo,
 
     /// To avoid similar parameter names while we're collecting [`OutParam`]s.
-    pub out_param_collision : HashMap<String, i32>,
+    pub out_param_collision: HashMap<String, i32>,
 
     pub relative_import_path: String,
     pub module_name: String,
@@ -242,7 +242,7 @@ impl<'ctx, 'tcx> RenderTerminusContext<'ctx, 'tcx> {
         let (p, n) = if self.out_param_collision.contains_key(&param_name) {
             let n = self.out_param_collision.get(&param_name).unwrap();
 
-            (format!("{param_name}_{n}"), n+1)
+            (format!("{param_name}_{n}"), n + 1)
         } else {
             (param_name.clone(), 1)
         };