diff --git a/test/behavior/math.zig b/test/behavior/math.zig
index 44629a0a004801ca0bd506b739860d9193ea4ceb..cd110bc80d8e5b04bcfd2e697dac78a5c5d970cd 100644
--- a/test/behavior/math.zig
+++ b/test/behavior/math.zig
@@ -1007,6 +1007,8 @@ test "@mulWithOverflow bitsize > 32" {
 }
 
 test "@mulWithOverflow bitsize 128 bits" {
+    if (builtin.zig_backend == .stage2_x86_64) return error.SkipZigTest;
+    if (builtin.zig_backend == .stage2_c) return error.SkipZigTest;
     if (builtin.zig_backend == .stage2_riscv64) return error.SkipZigTest;
     if (builtin.zig_backend == .stage2_aarch64) return error.SkipZigTest; // TODO
     if (builtin.zig_backend == .stage2_arm) return error.SkipZigTest; // TODO