diff --git a/miette-derive/src/diagnostic.rs b/miette-derive/src/diagnostic.rs
index 8886648..790a097 100644
--- a/miette-derive/src/diagnostic.rs
+++ b/miette-derive/src/diagnostic.rs
@@ -50,9 +50,7 @@ impl Diagnostic {
                             DiagnosticArg::Severity(sev) => {
                                 severity = Some(sev);
                             }
-                            DiagnosticArg::Help(hl) => {
-                                help = Some(hl)
-                            }
+                            DiagnosticArg::Help(hl) => help = Some(hl),
                         }
                     }
                     let ident = input.ident.clone();
diff --git a/miette-derive/src/diagnostic_arg.rs b/miette-derive/src/diagnostic_arg.rs
index 89fbb42..c250ab2 100644
--- a/miette-derive/src/diagnostic_arg.rs
+++ b/miette-derive/src/diagnostic_arg.rs
@@ -20,7 +20,10 @@ impl Parse for DiagnosticArg {
         } else if ident == "help" {
             Ok(DiagnosticArg::Help(input.parse()?))
         } else {
-            Err(syn::Error::new(ident.span(), "Unrecognized diagnostic option"))
+            Err(syn::Error::new(
+                ident.span(),
+                "Unrecognized diagnostic option",
+            ))
         }
     }
 }
diff --git a/miette-derive/src/severity.rs b/miette-derive/src/severity.rs
index 4a67cbe..c585eef 100644
--- a/miette-derive/src/severity.rs
+++ b/miette-derive/src/severity.rs
@@ -31,10 +31,7 @@ impl Parse for Severity {
                 Ok(Severity(input.parse::<syn::LitStr>()?.parse()?))
             }
         } else {
-            Err(syn::Error::new(
-                ident.span(),
-                "not a severity level.",
-            ))
+            Err(syn::Error::new(ident.span(), "not a severity level."))
         }
     }
 }
diff --git a/tests/derive.rs b/tests/derive.rs
index 55c20c2..bf1ddff 100644
--- a/tests/derive.rs
+++ b/tests/derive.rs
@@ -150,15 +150,9 @@ fn fmt_help() {
     #[derive(Debug, Diagnostic, Error)]
     #[error("welp")]
     enum FooEnum {
-        #[diagnostic(
-            code(foo::x),
-            help("{} {}", 1, "bar"),
-        )]
+        #[diagnostic(code(foo::x), help("{} {}", 1, "bar"))]
         X,
     }
 
-    assert_eq!(
-        "1 bar".to_string(),
-        FooEnum::X.help().unwrap().to_string()
-    );
+    assert_eq!("1 bar".to_string(), FooEnum::X.help().unwrap().to_string());
 }