diff --git a/src/chains.rs b/src/chains.rs
index 816ce60ad4d9..7512ef72e275 100644
--- a/src/chains.rs
+++ b/src/chains.rs
@@ -419,10 +419,12 @@ fn rewrite_chain_subexpr(
     context: &RewriteContext,
     shape: Shape,
 ) -> Option<String> {
-    let rewrite_element = |expr_str: String| if expr_str.len() <= shape.width {
-        Some(expr_str)
-    } else {
-        None
+    let rewrite_element = |expr_str: String| {
+        if expr_str.len() <= shape.width {
+            Some(expr_str)
+        } else {
+            None
+        }
     };
 
     match expr.node {
diff --git a/src/expr.rs b/src/expr.rs
index 259ac0007ed6..ed4adffb9f59 100644
--- a/src/expr.rs
+++ b/src/expr.rs
@@ -2316,12 +2316,13 @@ fn rewrite_paren(context: &RewriteContext, subexpr: &ast::Expr, shape: Shape) ->
         .offset_left(paren_overhead)
         .and_then(|s| s.sub_width(paren_overhead))?;
 
-    let paren_wrapper =
-        |s: &str| if context.config.spaces_within_parens_and_brackets() && !s.is_empty() {
+    let paren_wrapper = |s: &str| {
+        if context.config.spaces_within_parens_and_brackets() && !s.is_empty() {
             format!("( {} )", s)
         } else {
             format!("({})", s)
-        };
+        }
+    };
 
     let subexpr_str = subexpr.rewrite(context, sub_shape)?;
     debug!("rewrite_paren, subexpr_str: `{:?}`", subexpr_str);
diff --git a/src/items.rs b/src/items.rs
index b3647f26f533..496c66971d7d 100644
--- a/src/items.rs
+++ b/src/items.rs
@@ -482,10 +482,12 @@ fn format_variant_list(
                 enum_def.variants.iter(),
                 "}",
                 ",",
-                |f| if !f.node.attrs.is_empty() {
-                    f.node.attrs[0].span.lo()
-                } else {
-                    f.span.lo()
+                |f| {
+                    if !f.node.attrs.is_empty() {
+                        f.node.attrs[0].span.lo()
+                    } else {
+                        f.span.lo()
+                    }
                 },
                 |f| f.span.hi(),
                 |f| self.format_variant(f, one_line_width),
@@ -2549,10 +2551,12 @@ fn rewrite_where_clause_rfc_style(
     };
     let preds_str = write_list(&items.collect::<Vec<_>>(), &fmt)?;
 
-    let comment_separator = |comment: &str, shape: Shape| if comment.is_empty() {
-        String::new()
-    } else {
-        format!("\n{}", shape.indent.to_string(context.config))
+    let comment_separator = |comment: &str, shape: Shape| {
+        if comment.is_empty() {
+            String::new()
+        } else {
+            format!("\n{}", shape.indent.to_string(context.config))
+        }
     };
     let newline_before_where = comment_separator(&comment_before, shape);
     let newline_after_where = comment_separator(&comment_after, clause_shape);