diff --git a/src/Config.zig b/src/Config.zig
index 05397b7..1e3b3da 100644
--- a/src/Config.zig
+++ b/src/Config.zig
@@ -5,31 +5,37 @@ const lj = @import("./labjack.zig");
 
 const Config = @This();
 
-var global_internal: Config = undefined;
-pub const global: *const Config = &global_internal;
+var global_internal: std.json.Parsed(Config) = undefined;
+pub const global: *const Config = &global_internal.value;
 
 pub fn load(allocator: std.mem.Allocator, reader: anytype, err_writer: anytype) !void {
     var jread = std.json.Reader(1024, @TypeOf(reader)).init(allocator, reader);
     defer jread.deinit();
 
-    global_internal = try std.json.parseFromTokenSourceLeaky(
+    global_internal = try std.json.parseFromTokenSource(
         Config,
         allocator,
         &jread,
         .{},
     );
 
-    try global_internal.validate(err_writer);
+    try global.validate(err_writer);
 }
 
 pub fn loadDefault(allocator: std.mem.Allocator) void {
-    _ = allocator;
-    global_internal = .{};
+    const arena = allocator.create(std.heap.ArenaAllocator) catch unreachable;
+    arena.* = std.heap.ArenaAllocator.init(allocator);
+    global_internal = .{
+        .arena = arena,
+        .value = .{},
+    };
 }
 
-pub fn destroy(allocator: std.mem.Allocator) void {
+pub fn deinit() void {
     // TODO: implement this probably
-    _ = allocator;
+    const allocator = global_internal.arena.child_allocator;
+    global_internal.arena.deinit();
+    allocator.destroy(global_internal.arena);
 }
 
 pub fn validate(self: Config, err_writer: anytype) !void {
diff --git a/src/main.zig b/src/main.zig
index c011763..0abfca4 100644
--- a/src/main.zig
+++ b/src/main.zig
@@ -53,37 +53,23 @@ pub fn main() !u8 {
         }
 
         Config.loadDefault(allocator);
+        defer Config.deinit();
         return writeDefaultConfig(if (args.len == 3) args[2] else null);
     } else if (std.mem.eql(u8, args[1], commands.run)) {
         if (args.len > 3) {
             printHelp(exename, .run);
             return 1;
         }
-        blk: {
-            const confpath = if (args.len == 3) args[2] else "yaes.json";
-            const conf_file = std.fs.cwd().openFile(confpath, .{}) catch {
-                log.warn("Could not load config file '{s}'. Using default config.", .{confpath});
-                Config.loadDefault(allocator);
-                break :blk;
-            };
-            defer conf_file.close();
+        loadConfigOrDefault(allocator, if (args.len == 3) args[2] else null) catch
+            return 1;
 
-            Config.load(allocator, conf_file.reader(), std.io.getStdErr().writer()) catch |err| {
-                log.err("Could not parse config file '{s}': {s}.", .{ confpath, @errorName(err) });
-                return 1;
-            };
-        }
-        defer Config.destroy(allocator);
-
-        const ver = lj.getDriverVersion();
-        std.debug.print("Driver version: {d}\n", .{ver});
+        defer Config.deinit();
 
         RotCtl.run(allocator) catch |err| {
             log.err("rotator controller ceased unexpectedly! {s}", .{@errorName(err)});
             return 1;
         };
 
-        return 0;
     } else if (std.mem.eql(u8, args[1], commands.help)) {
         if (args.len != 3) {
             printHelp(exename, .help);
@@ -103,6 +89,24 @@ pub fn main() !u8 {
         printHelp(exename, .main);
         return 1;
     }
+
+    return 0;
+}
+
+fn loadConfigOrDefault(allocator: std.mem.Allocator, path: ?[]const u8) !void {
+    const confpath = path orelse "yaes.json";
+    const conf_file = std.fs.cwd().openFile(confpath, .{}) catch {
+        log.warn("Could not load config file '{s}'. Using default config.", .{confpath});
+        Config.loadDefault(allocator);
+        return;
+    };
+    defer conf_file.close();
+
+    Config.load(allocator, conf_file.reader(), std.io.getStdErr().writer()) catch |err| {
+        log.err("Could not parse config file '{s}': {s}.", .{ confpath, @errorName(err) });
+        return error.InvalidConfig;
+    };
+    log.info("Loaded config from '{s}'.", .{confpath});
 }
 
 fn installUdevRules(outpath: ?[]const u8) u8 {