diff --git a/tests/libtest/first.c b/tests/libtest/first.c
index 528f1785c1..c09d12dcd9 100644
--- a/tests/libtest/first.c
+++ b/tests/libtest/first.c
@@ -1,4 +1,4 @@
-#include <curl/curl.h>
+#include <curl.h>
 
 #ifdef MALLOCDEBUG
 /* provide a proto for this debug function */