diff --git a/tests/libtest/first.c b/tests/libtest/first.c
index c09d12dcd996b3ee5993b0ba7e8b7823c4c9faad..ac230b9738b4a2f7b88b72e689e42c84d61b0f31 100644
--- a/tests/libtest/first.c
+++ b/tests/libtest/first.c
@@ -1,4 +1,4 @@
-#include <curl.h>
+#include "test.h"
 
 #ifdef MALLOCDEBUG
 /* provide a proto for this debug function */