diff --git a/test/standalone.zig b/test/standalone.zig
index 6e0adcaa005622f8be29ff83b336a088f929cfbe..29a32d878f4c1bd1d4acb26144a0e3b4c07e8a13 100644
--- a/test/standalone.zig
+++ b/test/standalone.zig
@@ -5,6 +5,8 @@ pub const SimpleCase = struct {
     target: std.zig.CrossTarget = .{},
     is_test: bool = false,
     is_exe: bool = true,
+    /// Run only on this OS.
+    os_filter: ?std.Target.Os.Tag = null,
 };
 
 pub const BuildCase = struct {
@@ -50,7 +52,7 @@ pub const simple_cases = [_]SimpleCase{
 
     .{
         .src_path = "test/standalone/issue_9402/main.zig",
-        .target = .{ .os_tag = .windows },
+        .os_filter = .windows,
         .link_libc = true,
     },
 
diff --git a/test/tests.zig b/test/tests.zig
index c07b6693765935f62a77b0ad041554b2d80058e1..9ba9639e2a4535af922975bf25cf2e13bf5f4ead 100644
--- a/test/tests.zig
+++ b/test/tests.zig
@@ -571,6 +571,9 @@ pub fn addStandaloneTests(
     for (standalone.simple_cases) |case| {
         for (optimize_modes) |optimize| {
             if (!case.all_modes and optimize != .Debug) continue;
+            if (case.os_filter) |os_tag| {
+                if (os_tag != builtin.os.tag) continue;
+            }
 
             if (case.is_exe) {
                 const exe = b.addExecutable(.{