diff --git a/lib/std/build/OptionsStep.zig b/lib/std/build/OptionsStep.zig
index 2f1c1db668..12e7950599 100644
--- a/lib/std/build/OptionsStep.zig
+++ b/lib/std/build/OptionsStep.zig
@@ -262,4 +262,6 @@ test "OptionsStep" {
         \\};
         \\
     , options.contents.items);
+
+    _ = try std.zig.parse(&arena.allocator, try options.contents.toOwnedSliceSentinel(0));
 }