diff --git a/crates/collab/src/tests/integration_tests.rs b/crates/collab/src/tests/integration_tests.rs
index afc3e7cfb84ee24fbf6eb069a225e7f04096676a..615ad52e2ef367ea640a81ea69c3281ccf92accf 100644
--- a/crates/collab/src/tests/integration_tests.rs
+++ b/crates/collab/src/tests/integration_tests.rs
@@ -4409,7 +4409,7 @@ async fn test_formatting_buffer(
                 file.defaults.formatter = Some(SelectedFormatter::List(FormatterList(
                     vec![Formatter::External {
                         command: "awk".into(),
-                        arguments: vec!["{sub(/two/,\"{buffer_path}\")}1".to_string()].into(),
+                        arguments: Some(vec!["{sub(/two/,\"{buffer_path}\")}1".to_string()].into()),
                     }]
                     .into(),
                 )));
diff --git a/crates/language/src/language_settings.rs b/crates/language/src/language_settings.rs
index 2f1a7be2bf492d73baab8f30aa20847edeb85719..d610ab09865ce32be16a8868e62adc7b8685bad3 100644
--- a/crates/language/src/language_settings.rs
+++ b/crates/language/src/language_settings.rs
@@ -661,7 +661,7 @@ pub enum Formatter {
         /// The external program to run.
         command: Arc<str>,
         /// The arguments to pass to the program.
-        arguments: Arc<[String]>,
+        arguments: Option<Arc<[String]>>,
     },
     /// Files should be formatted using code actions executed by language servers.
     CodeActions(HashMap<String, bool>),
diff --git a/crates/project/src/lsp_store.rs b/crates/project/src/lsp_store.rs
index 37922b7c2ee03b39b15def2fabf73018b627c237..a3763810e1a262e43daa8c1810d96cc8b10a0ffa 100644
--- a/crates/project/src/lsp_store.rs
+++ b/crates/project/src/lsp_store.rs
@@ -539,13 +539,19 @@ impl LocalLspStore {
             }
             Formatter::External { command, arguments } => {
                 let buffer_abs_path = buffer_abs_path.as_ref().map(|path| path.as_path());
-                Self::format_via_external_command(buffer, buffer_abs_path, command, arguments, cx)
-                    .await
-                    .context(format!(
-                        "failed to format via external command {:?}",
-                        command
-                    ))?
-                    .map(FormatOperation::External)
+                Self::format_via_external_command(
+                    buffer,
+                    buffer_abs_path,
+                    command,
+                    arguments.as_deref(),
+                    cx,
+                )
+                .await
+                .context(format!(
+                    "failed to format via external command {:?}",
+                    command
+                ))?
+                .map(FormatOperation::External)
             }
             Formatter::CodeActions(code_actions) => {
                 let code_actions = deserialize_code_actions(code_actions);
@@ -571,7 +577,7 @@ impl LocalLspStore {
         buffer: &Model<Buffer>,
         buffer_abs_path: Option<&Path>,
         command: &str,
-        arguments: &[String],
+        arguments: Option<&[String]>,
         cx: &mut AsyncAppContext,
     ) -> Result<Option<Diff>> {
         let working_dir_path = buffer.update(cx, |buffer, cx| {
@@ -595,14 +601,17 @@ impl LocalLspStore {
             child.current_dir(working_dir_path);
         }
 
-        let mut child = child
-            .args(arguments.iter().map(|arg| {
+        if let Some(arguments) = arguments {
+            child.args(arguments.iter().map(|arg| {
                 if let Some(buffer_abs_path) = buffer_abs_path {
                     arg.replace("{buffer_path}", &buffer_abs_path.to_string_lossy())
                 } else {
                     arg.replace("{buffer_path}", "Untitled")
                 }
-            }))
+            }));
+        }
+
+        let mut child = child
             .stdin(smol::process::Stdio::piped())
             .stdout(smol::process::Stdio::piped())
             .stderr(smol::process::Stdio::piped())