diff --git a/src/visitor.rs b/src/visitor.rs
index 7b694de4535..ef422ca5924 100644
--- a/src/visitor.rs
+++ b/src/visitor.rs
@@ -69,7 +69,7 @@ pub fn visit_block(&mut self, b: &ast::Block) {
 
         // Check if this block has braces.
         let snippet = self.snippet(b.span);
-        let has_braces = &snippet[..1] == "{" || &snippet[..6] == "unsafe";
+        let has_braces = snippet.starts_with("{") || snippet.starts_with("unsafe");
         let brace_compensation = if has_braces {
             BytePos(1)
         } else {