diff --git a/Environment.c b/Environment.c
index 495def3..cd8eedb 100644
--- a/Environment.c
+++ b/Environment.c
@@ -111,7 +111,7 @@ static udt_Environment *Environment_NewFromScratch(
     mode = OCI_OBJECT;
     if (threaded)
         mode |= OCI_THREADED;
-#ifdef ORACLE_11G
+#ifdef OCI_EVENTS
     if (events)
         mode |= OCI_EVENTS;
 #endif