diff --git a/test/C++Frontend/2003-05-22-VarSizeArray.c b/test/C++Frontend/2003-05-22-VarSizeArray.c
index 78e15dfc3be..7ab4d67a998 100644
--- a/test/C++Frontend/2003-05-22-VarSizeArray.c
+++ b/test/C++Frontend/2003-05-22-VarSizeArray.c
@@ -1,3 +1,4 @@
+#include <stdio.h>
 
 int test(int Num) {
   int Arr[Num];