diff --git a/testing/geckodriver/src/marionette.rs b/testing/geckodriver/src/marionette.rs
index ab9bde2c11ce..73a07c439612 100644
--- a/testing/geckodriver/src/marionette.rs
+++ b/testing/geckodriver/src/marionette.rs
@@ -774,7 +774,7 @@ impl MarionetteSession {
 
                 WebDriverResponse::Timeouts(TimeoutsResponse {
                     script: script,
-                    pageLoad: page_load,
+                    page_load: page_load,
                     implicit: implicit,
                 })
             }
diff --git a/testing/webdriver/src/response.rs b/testing/webdriver/src/response.rs
index e8ae4d2015c6..6ddcb111fd40 100644
--- a/testing/webdriver/src/response.rs
+++ b/testing/webdriver/src/response.rs
@@ -84,16 +84,17 @@ impl NewSessionResponse {
 #[derive(Debug, PartialEq, Serialize)]
 pub struct TimeoutsResponse {
     pub script: u64,
-    pub pageLoad: u64,
+    #[serde(rename = "pageLoad")]
+    pub page_load: u64,
     pub implicit: u64,
 }
 
 impl TimeoutsResponse {
     pub fn new(script: u64, page_load: u64, implicit: u64) -> TimeoutsResponse {
         TimeoutsResponse {
-            script: script,
-            pageLoad: page_load,
-            implicit: implicit,
+            script,
+            page_load,
+            implicit,
         }
     }
 }