diff --git a/src/virtual_dom/mod.rs b/src/virtual_dom/mod.rs
index 81aaa8f0ce2..bb31fd3ed45 100644
--- a/src/virtual_dom/mod.rs
+++ b/src/virtual_dom/mod.rs
@@ -84,13 +84,11 @@ impl Classes {
 
 impl ToString for Classes {
     fn to_string(&self) -> String {
-        let mut buf = String::new();
-        for class in &self.set {
-            buf.push_str(class);
-            buf.push(' ');
-        }
-        buf.pop();
-        buf
+        self.set
+            .iter()
+            .map(String::as_str)
+            .collect::<Vec<&str>>()
+            .join(" ")
     }
 }