diff --git a/shell/browser/net/proxying_url_loader_factory.cc b/shell/browser/net/proxying_url_loader_factory.cc
index 45f3c9f7adf1f..0d1123bd0a6ed 100644
--- a/shell/browser/net/proxying_url_loader_factory.cc
+++ b/shell/browser/net/proxying_url_loader_factory.cc
@@ -36,7 +36,7 @@ ProxyingURLLoaderFactory::InProgressRequest::FollowRedirectParams::
 
 ProxyingURLLoaderFactory::InProgressRequest::InProgressRequest(
     ProxyingURLLoaderFactory* factory,
-    int64_t web_request_id,
+    uint64_t web_request_id,
     int32_t view_routing_id,
     int32_t frame_routing_id,
     int32_t network_service_request_id,
diff --git a/shell/browser/net/proxying_url_loader_factory.h b/shell/browser/net/proxying_url_loader_factory.h
index e417ccac910aa..00bedcf9dfeb7 100644
--- a/shell/browser/net/proxying_url_loader_factory.h
+++ b/shell/browser/net/proxying_url_loader_factory.h
@@ -53,7 +53,7 @@ class ProxyingURLLoaderFactory
     // For usual requests
     InProgressRequest(
         ProxyingURLLoaderFactory* factory,
-        int64_t web_request_id,
+        uint64_t web_request_id,
         int32_t view_routing_id,
         int32_t frame_routing_id,
         int32_t network_service_request_id,