diff --git a/src/jetzig/views/Route.zig b/src/jetzig/views/Route.zig
index a16e9fb..bb2f4dd 100644
--- a/src/jetzig/views/Route.zig
+++ b/src/jetzig/views/Route.zig
@@ -72,7 +72,7 @@ template: []const u8,
 json_params: []const []const u8,
 params: std.ArrayList(*jetzig.data.Data) = undefined,
 id: []const u8,
-formats: ?Formats,
+formats: ?Formats = null,
 
 /// Initializes a route's static params on server launch. Converts static params (JSON strings)
 /// to `jetzig.data.Data` values. Memory is owned by caller (`App.start()`).