diff --git a/windows/tests/test.h b/windows/tests/test.h
index 013a8519b51..99e67e5c2bf 100644
--- a/windows/tests/test.h
+++ b/windows/tests/test.h
@@ -1,4 +1,5 @@
 #include <toku_portability.h>
+#include <toku_assert.h>
 
 int test_main(int argc, char *argv[]);