diff --git a/src/futils.cpp b/src/futils.cpp
index 94629a3e..5ddb10a7 100644
--- a/src/futils.cpp
+++ b/src/futils.cpp
@@ -11,6 +11,7 @@
 // + standard includes
 #include <algorithm>
 #include <array>
+#include <cstdint>
 #include <cstring>
 #include <sstream>
 #include <stdexcept>