diff --git a/reactos/lib/drivers/oskittcp/oskittcp/ip_output.c b/reactos/lib/drivers/oskittcp/oskittcp/ip_output.c
index 709b6b10bbc..3de9ff18b75 100644
--- a/reactos/lib/drivers/oskittcp/oskittcp/ip_output.c
+++ b/reactos/lib/drivers/oskittcp/oskittcp/ip_output.c
@@ -301,7 +301,7 @@ ip_output(m0, opt, ro, flags, imo)
 	}
 #endif
 
-#ifndef notdef
+#ifdef notdef
 	/*
 	 * If source address not specified yet, use address
 	 * of outgoing interface.