diff --git a/dom/src/main/scala/org/scalajs/dom/URLSearchParams.scala b/dom/src/main/scala/org/scalajs/dom/URLSearchParams.scala
index abfb6af6..1f76fe4a 100644
--- a/dom/src/main/scala/org/scalajs/dom/URLSearchParams.scala
+++ b/dom/src/main/scala/org/scalajs/dom/URLSearchParams.scala
@@ -10,7 +10,7 @@ class URLSearchParams extends js.Iterable[js.Tuple2[String, String]] {
 
   /** Leading '?' characters are ignored. */
   def this(init: String) = this()
-  def this(init: Sequence[String]) = this()
+  def this(init: Sequence[js.Tuple2[String, String]]) = this()
   def this(init: js.Dictionary[String]) = this()
 
   def append(name: String, value: String): Unit = js.native