diff --git a/Libraries/LibWeb/URLEncoder.cpp b/Libraries/LibWeb/URLEncoder.cpp
index a3bd5fdd00..e760082fdc 100644
--- a/Libraries/LibWeb/URLEncoder.cpp
+++ b/Libraries/LibWeb/URLEncoder.cpp
@@ -29,7 +29,7 @@
 
 namespace Web {
 
-String url_encode(StringView view)
+String url_encode(const StringView& view)
 {
     StringBuilder builder;
 
@@ -46,7 +46,7 @@ String url_encode(StringView view)
     return builder.to_string();
 }
 
-String url_encode(Vector<URLQueryParam> pairs)
+String url_encode(const Vector<URLQueryParam>& pairs)
 {
     StringBuilder builder;
     for (size_t i = 0; i < pairs.size(); ++i) {
diff --git a/Libraries/LibWeb/URLEncoder.h b/Libraries/LibWeb/URLEncoder.h
index 5b8cfa01be..61cb8b34dd 100644
--- a/Libraries/LibWeb/URLEncoder.h
+++ b/Libraries/LibWeb/URLEncoder.h
@@ -36,8 +36,8 @@ struct URLQueryParam {
     String value;
 };
 
-String url_encode(StringView);
-String url_encode(Vector<URLQueryParam>);
+String url_encode(const StringView&);
+String url_encode(const Vector<URLQueryParam>&);
 
 }