diff --git a/src/libsyntax/feature_gate.rs b/src/libsyntax/feature_gate.rs
index af7e4a6855f7a97cb2e32741dae9bed5052e976a..c3338f02ee43ca828f39746688215b9b7395215d 100644
--- a/src/libsyntax/feature_gate.rs
+++ b/src/libsyntax/feature_gate.rs
@@ -868,7 +868,7 @@ fn check_crate_inner<F>(cm: &CodeMap, span_handler: &SpanHandler,
         declared_stable_lang_features: accepted_features,
         declared_lib_features: unknown_features,
         const_fn: cx.has_feature("const_fn"),
-        static_recursion: cx.has_feature("static_recursion")
+        static_recursion: cx.has_feature("static_recursion"),
         default_type_parameter_fallback: cx.has_feature("default_type_parameter_fallback"),
     }
 }