diff --git a/youtube/youtube.d.ts b/youtube/youtube.d.ts
index 42262f452..dab3a7866 100644
--- a/youtube/youtube.d.ts
+++ b/youtube/youtube.d.ts
@@ -50,8 +50,8 @@ declare module YT {
     }
 
     export interface PlayerOptions {
-        width?: string;
-        height?: string;
+        width?: string | number;
+        height?: string | number;
         videoId?: string;
         playerVars?: PlayerVars;
         events?: Events;