diff --git a/src/test/webdriver.rs b/src/test/webdriver.rs
index 7b4223d..f0f34e8 100644
--- a/src/test/webdriver.rs
+++ b/src/test/webdriver.rs
@@ -39,8 +39,7 @@ struct Collector(Vec<u8>);
 
 impl Collector {
     pub fn take_content(&mut self) -> Vec<u8> {
-        // TODO: replace with `std::mem::take` once stable
-        std::mem::replace(&mut self.0, Vec::default())
+        std::mem::take(&mut self.0)
     }
 }