diff --git a/_examples/cpkg/cpkg.go b/_examples/cpkg/cpkg.go
index 98e8fe7..4c973f9 100644
--- a/_examples/cpkg/cpkg.go
+++ b/_examples/cpkg/cpkg.go
@@ -9,6 +9,7 @@ package cpkg
 //#include <stdlib.h>
 //void cpkg_printf(const char *str) {
 //	fprintf(stdout, str);
+//	fflush(stdout);
 //}
 import "C"