diff --git a/libc/test/src/stdlib/SortingTest.h b/libc/test/src/stdlib/SortingTest.h
index 611206ed708d25..681a420ea72744 100644
--- a/libc/test/src/stdlib/SortingTest.h
+++ b/libc/test/src/stdlib/SortingTest.h
@@ -298,8 +298,9 @@ class SortingTest : public LIBC_NAMESPACE::testing::Test {
     static_assert(ARRAY_LEN < 256); // so we can encode the values.
 
     // Minimum alignment to test implementation for bugs related to assuming
-    // incorrect association between alignment and element size.
-    alignas(1) uint8_t buf[BUF_SIZE];
+    // incorrect association between alignment and element size. The buffer is
+    // 'static' as otherwise it will exhaust the stack on the GPU targets.
+    alignas(1) static uint8_t buf[BUF_SIZE];
 
     // GCC still requires capturing the constant ARRAY_INITIAL_VALS in the
     // lambda hence, let's use & to implicitly capture all needed variables