diff --git a/cpp/perspective/src/include/perspective/gnode.h b/cpp/perspective/src/include/perspective/gnode.h
index 9dd560046a..c755a21f93 100644
--- a/cpp/perspective/src/include/perspective/gnode.h
+++ b/cpp/perspective/src/include/perspective/gnode.h
@@ -208,7 +208,7 @@ class PERSPECTIVE_EXPORT t_gnode {
     std::shared_ptr<t_expression_vocab> get_expression_vocab() const;
     std::shared_ptr<t_regex_mapping> get_expression_regex_mapping() const;
 
-#ifdef PSP_PARALLEL_FOR
+#ifdef PSP_ENABLE_PYTHON
     void set_event_loop_thread_id(std::thread::id id);
 #endif