diff --git a/src/error_tests.zig b/src/error_tests.zig
index 51bdac7..b818bc0 100644
--- a/src/error_tests.zig
+++ b/src/error_tests.zig
@@ -1,5 +1,6 @@
 const std = @import("std");
-const Compilation = @import("compile.zig").Compilation;
+const compile = @import("compile.zig");
+const Module = compile.Module;
 
 test "compiler: unknown global variable" {
     try testEqual(
@@ -42,11 +43,16 @@ test "compiler: invalid divert target" {
 
 fn testEqual(source_bytes: [:0]const u8, expected_error: []const u8) !void {
     const gpa = std.testing.allocator;
+    var arena_allocator = std.heap.ArenaAllocator.init(gpa);
+    defer arena_allocator.deinit();
+
     var allocating = std.io.Writer.Allocating.init(gpa);
     defer allocating.deinit();
-    const io_w = &allocating.writer;
 
-    var c = try Compilation.compile(gpa, .{
+    const io_w = &allocating.writer;
+    const arena = arena_allocator.allocator();
+
+    var c = try Module.compile(gpa, arena, .{
         .source_bytes = source_bytes,
         .filename = "<STDIN>",
         .dump_writer = null,
@@ -56,7 +62,7 @@ fn testEqual(source_bytes: [:0]const u8, expected_error: []const u8) !void {
     });
     defer c.deinit();
 
-    try std.testing.expect(c.errors.len > 0);
-    for (c.errors) |err| try c.renderError(io_w, err);
+    try std.testing.expect(c.errors.items.len > 0);
+    for (c.errors.items) |err| try c.renderError(io_w, err);
     return std.testing.expectEqualSlices(u8, expected_error, allocating.written());
 }