Add enum classifier for error messages
diff --git a/syntax/check.rs b/syntax/check.rs
index 4fbc6e2..22ae58e 100644
--- a/syntax/check.rs
+++ b/syntax/check.rs
@@ -355,6 +355,8 @@
         Type::Ident(ident) => {
             if cx.types.structs.contains_key(ident) {
                 "struct".to_owned()
+            } else if cx.types.enums.contains_key(ident) {
+                "enum".to_owned()
             } else if cx.types.cxx.contains(ident) {
                 "C++ type".to_owned()
             } else if cx.types.rust.contains(ident) {