diff --git a/src/core/format.hpp b/src/core/format.hpp
index 52d12b68d9..e896293fba 100644
--- a/src/core/format.hpp
+++ b/src/core/format.hpp
@@ -13,6 +13,8 @@
 #include "../3rdparty/fmt/format.h"
 //#include "strong_typedef_type.hpp"
 
+#include <type_traits>
+
 template <typename E, typename Char>
 struct fmt::formatter<E, Char, std::enable_if_t<std::is_enum<E>::value>> : fmt::formatter<typename std::underlying_type<E>::type> {
 	using underlying_type = typename std::underlying_type<E>::type;
diff --git a/src/debug_fmt.h b/src/debug_fmt.h
index 4011e28955..9fa2b0ee86 100644
--- a/src/debug_fmt.h
+++ b/src/debug_fmt.h
@@ -11,7 +11,7 @@
 #define DEBUG_FMT_H
 
 #include "debug.h"
-#include "3rdparty/fmt/format.h"
+#include "core/format.hpp"
 
 /**
  * Ouptut a line of debugging information.