diff --git a/domurl/domurl-tests.ts b/domurl/domurl-tests.ts
index fd4895ed5f..0b83b1c491 100644
--- a/domurl/domurl-tests.ts
+++ b/domurl/domurl-tests.ts
@@ -44,7 +44,7 @@ delete u.query.a;
 delete u.query["a"];
 
 // If you need to remove all query string params:
-alert(u.clearQuaery());
+alert(u.clearQuery());
 
 // Lookup URL parts:
 alert(
diff --git a/domurl/domurl.d.ts b/domurl/domurl.d.ts
index f659ca1843..8c418c75cc 100644
--- a/domurl/domurl.d.ts
+++ b/domurl/domurl.d.ts
@@ -5,7 +5,7 @@
 
 declare class QueryString {
     constructor(qs?: string);
-    toString(): string;
+    toString: () => string;
 }
 
 declare class Url<T> {
@@ -19,12 +19,12 @@ declare class Url<T> {
     path: string;
     hash: string;
     href: string;
-    toString(): string;
-    encode(s: string): string;
-    decode(s: string): string;
-    isAbsolute(): boolean;
-    paths(paths?: [string]): [string];
-    isEmptyQuery(): boolean;
-    queryLength(): number;
-    clearQuery(): Url;
+    toString: () => string;
+    encode: (s: string) => string;
+    decode: (s: string) => string;
+    isAbsolute: () => boolean;
+    paths: (paths?: [string]) => [string];
+    isEmptyQuery: () => boolean;
+    queryLength: () => number;
+    clearQuery: () => Url<T>;
 }