diff --git a/src/items.rs b/src/items.rs
index dc3abd88ffd8..30f3d6f4be45 100644
--- a/src/items.rs
+++ b/src/items.rs
@@ -1281,17 +1281,10 @@ fn format_tuple_struct(
         }
         result.push(')');
     } else {
-        // 1 = ","
-        let body = rewrite_call_inner(
-            context,
-            "",
-            &fields.iter().map(|field| field).collect::<Vec<_>>()[..],
-            span,
-            Shape::indented(offset, context.config).sub_width(1)?,
-            context.config.fn_call_width(),
-            false,
-        )?;
-        result.push_str(&body);
+        let shape = Shape::indented(offset, context.config);
+        let fields = &fields.iter().map(|field| field).collect::<Vec<_>>()[..];
+        let one_line_width = context.config.fn_call_width();
+        result = rewrite_call_inner(context, &result, fields, span, shape, one_line_width, false)?;
     }
 
     if !where_clause_str.is_empty() && !where_clause_str.contains('\n')
diff --git a/tests/source/structs.rs b/tests/source/structs.rs
index acae17befdd4..6dfb565e80bf 100644
--- a/tests/source/structs.rs
+++ b/tests/source/structs.rs
@@ -266,3 +266,6 @@ pub(crate) struct Foo{}
 pub(in self) struct Foo();
 pub(super) struct Foo();
 pub(crate) struct Foo();
+
+// #2125
+pub struct ReadinessCheckRegistry(Mutex<HashMap<Arc<String>, Box<Fn() -> ReadinessCheck + Sync + Send>>>);
diff --git a/tests/target/structs.rs b/tests/target/structs.rs
index e29647c71fbb..1628c96f5552 100644
--- a/tests/target/structs.rs
+++ b/tests/target/structs.rs
@@ -308,3 +308,8 @@ pub(crate) struct Foo {}
 pub(self) struct Foo();
 pub(super) struct Foo();
 pub(crate) struct Foo();
+
+// #2125
+pub struct ReadinessCheckRegistry(
+    Mutex<HashMap<Arc<String>, Box<Fn() -> ReadinessCheck + Sync + Send>>>,
+);