diff --git a/ctest/constant.c b/ctest/constant.c
index 861d70bcc..5a26a4dde 100644
--- a/ctest/constant.c
+++ b/ctest/constant.c
@@ -1,3 +1,4 @@
+#include "cblas_test.h"
 int CBLAS_CallFromC;
 int RowMajorStrg;