diff --git a/projects/SelfTest/TrickyTests.cpp b/projects/SelfTest/TrickyTests.cpp
index f0311158..26625b03 100644
--- a/projects/SelfTest/TrickyTests.cpp
+++ b/projects/SelfTest/TrickyTests.cpp
@@ -10,6 +10,8 @@
 #pragma clang diagnostic ignored "-Wpadded"
 #endif
 
+#include <stdio.h>
+
 #include "catch.hpp"
 
 #ifdef __clang__