diff --git a/event_rpcgen.py b/event_rpcgen.py
index 6b8f5fa9..7bbe3138 100755
--- a/event_rpcgen.py
+++ b/event_rpcgen.py
@@ -1566,7 +1566,7 @@ class CCodeGenerator:
                  '#include <event2/buffer.h>\n'
                  '#include <event2/tag.h>\n\n'
                  '#ifdef _EVENT___func__\n'
-                 '#define __func__ _EVENT___FUNC__\n'
+                 '#define __func__ _EVENT___func__\n'
                  '#endif\n\n'
                  )