diff --git a/sdp.d.ts b/sdp.d.ts
index 7f3d0c5..2e7e90f 100644
--- a/sdp.d.ts
+++ b/sdp.d.ts
@@ -44,7 +44,7 @@ export interface SDPHeaderExtension {
     id: number;
     direction?: SDPDirection;
     uri: string;
-    atrributes: string | undefined;
+    attributes: string | undefined;
 }
 
 export interface SDPFeedbackParameter {