diff --git a/components/webdriver_server/lib.rs b/components/webdriver_server/lib.rs
index ecead687c1f..c00f36c070a 100644
--- a/components/webdriver_server/lib.rs
+++ b/components/webdriver_server/lib.rs
@@ -622,9 +622,9 @@ impl Handler {
         };
 
         let img_vec = match png::to_vec(&mut img) {
-           Ok(x) => x,
-           Err(_) => return Err(WebDriverError::new(ErrorStatus::UnknownError,
-                                                    "Taking screenshot failed"))
+            Ok(x) => x,
+            Err(_) => return Err(WebDriverError::new(ErrorStatus::UnknownError,
+                                                     "Taking screenshot failed"))
         };
         let config = Config {
             char_set: CharacterSet::Standard,