diff --git a/test/behavior/math.zig b/test/behavior/math.zig
index 679c94a78e..914c47ba69 100644
--- a/test/behavior/math.zig
+++ b/test/behavior/math.zig
@@ -111,6 +111,8 @@ test "@clz vectors" {
 }
 
 fn testClzVectors() !void {
+    if (comptime builtin.cpu.has(.loongarch, .lsx)) return error.SkipZigTest; // https://github.com/llvm/llvm-project/issues/159529
+
     const Vu4 = @Vector(64, u4);
     const Vu8 = @Vector(64, u8);
     const Vu128 = @Vector(64, u128);
@@ -197,6 +199,8 @@ test "@ctz vectors" {
 }
 
 fn testCtzVectors() !void {
+    if (comptime builtin.cpu.has(.loongarch, .lsx)) return error.SkipZigTest; // https://github.com/llvm/llvm-project/issues/159529
+
     const Vu4 = @Vector(64, u4);
     const Vu8 = @Vector(64, u8);
     @setEvalBranchQuota(10_000);