diff --git a/wasmer-it/src/ast.rs b/wasmer-it/src/ast.rs
index 6f2c1cc..a2510a9 100644
--- a/wasmer-it/src/ast.rs
+++ b/wasmer-it/src/ast.rs
@@ -168,3 +168,9 @@ impl Interfaces<'_> {
         }
     }
 }
+
+impl Default for Interfaces<'_> {
+    fn default() -> Self {
+        Self::new()
+    }
+}