diff --git a/src/lib/time/digxel.hpp b/src/lib/time/digxel.hpp
index 53aac3456..61bf2ab3e 100644
--- a/src/lib/time/digxel.hpp
+++ b/src/lib/time/digxel.hpp
@@ -74,6 +74,9 @@
 #include <string>
 #include <cmath>
 
+#include <cstdio>
+#include <cstdarg>
+
 using std::string;