diff --git a/tonic-build/src/client.rs b/tonic-build/src/client.rs
index 81f75b8..8bb8e60 100644
--- a/tonic-build/src/client.rs
+++ b/tonic-build/src/client.rs
@@ -1,7 +1,7 @@
 use std::collections::HashSet;
 
 use super::{Attributes, Method, Service};
-use crate::{generate_doc_comments, naive_snake_case};
+use crate::{format_method_name, generate_doc_comments, naive_snake_case};
 use proc_macro2::TokenStream;
 use quote::{format_ident, quote};
 
@@ -190,13 +190,7 @@ fn generate_methods<T: Service>(
             method.identifier()
         );
 
-        if !disable_comments.contains(&format!(
-            "{}{}{}.{}",
-            package,
-            if package.is_empty() { "" } else { "." },
-            service.identifier(),
-            method.identifier()
-        )) {
+        if !disable_comments.contains(&format_method_name(package, service, method)) {
             stream.extend(generate_doc_comments(method.comment()));
         }
 
diff --git a/tonic-build/src/lib.rs b/tonic-build/src/lib.rs
index acc3201..fe3380a 100644
--- a/tonic-build/src/lib.rs
+++ b/tonic-build/src/lib.rs
@@ -197,6 +197,20 @@ impl Attributes {
     }
 }
 
+fn format_method_name<T: Service>(
+    package: &str,
+    service: &T,
+    method: &<T as Service>::Method,
+) -> String {
+    format!(
+        "{}{}{}.{}",
+        package,
+        if package.is_empty() { "" } else { "." },
+        service.identifier(),
+        method.identifier()
+    )
+}
+
 // Generates attributes given a list of (`pattern`, `attribute`) pairs. If `pattern` matches `name`, `attribute` will be included.
 fn generate_attributes<'a>(
     name: &str,
@@ -218,7 +232,7 @@ fn generate_attributes<'a>(
 fn generate_doc_comment<S: AsRef<str>>(comment: S) -> TokenStream {
     let comment = comment.as_ref();
 
-    let comment = if !comment.starts_with(" ") {
+    let comment = if !comment.starts_with(' ') {
         format!(" {}", comment)
     } else {
         comment.to_string()
diff --git a/tonic-build/src/server.rs b/tonic-build/src/server.rs
index 40bf62f..99a204b 100644
--- a/tonic-build/src/server.rs
+++ b/tonic-build/src/server.rs
@@ -1,7 +1,7 @@
 use std::collections::HashSet;
 
 use super::{Attributes, Method, Service};
-use crate::{generate_doc_comment, generate_doc_comments, naive_snake_case};
+use crate::{format_method_name, generate_doc_comment, generate_doc_comments, naive_snake_case};
 use proc_macro2::{Span, TokenStream};
 use quote::quote;
 use syn::{Ident, Lit, LitStr};
@@ -239,13 +239,8 @@ fn generate_trait_methods<T: Service>(
         let (req_message, res_message) =
             method.request_response_name(proto_path, compile_well_known_types);
 
-        let method_doc = if disable_comments.contains(&format!(
-            "{}{}{}.{}",
-            package,
-            if package.is_empty() { "" } else { "." },
-            service.identifier(),
-            method.identifier()
-        )) {
+        let method_doc = if disable_comments.contains(&format_method_name(package, service, method))
+        {
             TokenStream::new()
         } else {
             generate_doc_comments(method.comment())