diff --git a/test/behavior/basic.zig b/test/behavior/basic.zig
index e704e190f377b95e340b03ba9be40d8febb0fd3c..442cd02d5a08f2877be6c658f33369d9f6a59540 100644
--- a/test/behavior/basic.zig
+++ b/test/behavior/basic.zig
@@ -38,6 +38,10 @@ test "truncate to non-power-of-two integers" {
 }
 
 test "truncate to non-power-of-two integers from 128-bit" {
+    if (builtin.zig_backend == .stage2_wasm) return error.SkipZigTest; // TODO
+    if (builtin.zig_backend == .stage2_x86_64) return error.SkipZigTest; // TODO
+    if (builtin.zig_backend == .stage2_aarch64) return error.SkipZigTest; // TODO
+    if (builtin.zig_backend == .stage2_arm) return error.SkipZigTest; // TODO
     if (builtin.zig_backend == .stage2_sparc64) return error.SkipZigTest; // TODO
 
     try testTrunc(u128, u1, 0xffffffff_ffffffff_ffffffff_01010101, 0x01);