thodg/libgit2

diff --git a/tests/core/utf8.c b/tests/core/utf8.c
index 021828e..e1987b8 100644
--- a/tests/core/utf8.c
+++ b/tests/core/utf8.c
@@ -1,4 +1,5 @@
 #include "clar_libgit2.h"
+#include "utf8.h"
 
 void test_core_utf8__char_length(void)
 {