diff --git a/src/format.hpp b/src/format.hpp
index 9c8341c..f0b0c8e 100644
--- a/src/format.hpp
+++ b/src/format.hpp
@@ -16,6 +16,10 @@
 {
 
 };
+template <> struct GetFormatType<bool>
+{
+    static constexpr auto format = "%d";
+};
 template <> struct GetFormatType<char>
 {
     static constexpr auto format = "=%hhd";