diff --git a/test/behavior/int128.zig b/test/behavior/int128.zig
index 6ae4ef51db..f02795cebe 100644
--- a/test/behavior/int128.zig
+++ b/test/behavior/int128.zig
@@ -64,6 +64,7 @@ test "int128" {
 }
 
 test "truncate int128" {
+    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