diff --git a/core/src/header/extension/mod.rs b/core/src/header/extension/mod.rs
index 96f795cd..3082f9d0 100644
--- a/core/src/header/extension/mod.rs
+++ b/core/src/header/extension/mod.rs
@@ -58,7 +58,7 @@ impl HeaderExtension {
 
 impl Default for HeaderExtension {
 	fn default() -> Self {
-		v2::HeaderExtension::default().into()
+		v1::HeaderExtension::default().into()
 	}
 }