diff --git a/tests/test-utils.hpp b/tests/test-utils.hpp
index 38e24a7..dd8ec6a 100644
--- a/tests/test-utils.hpp
+++ b/tests/test-utils.hpp
@@ -2,6 +2,7 @@
 #define CPER_IR_TEST_UTILS_H
 
 extern "C" {
+#include <stdio.h>
 #include <libcper/BaseTypes.h>
 }