diff --git a/src/core.c b/src/core.c
index 18f822c2..d47e24ca 100644
--- a/src/core.c
+++ b/src/core.c
@@ -835,6 +835,9 @@ atomic_store64(MDBX_atomic_uint64_t *p, const uint64_t value,
                enum MDBX_memory_order order) {
   STATIC_ASSERT(sizeof(MDBX_atomic_uint64_t) == 8);
 #if MDBX_64BIT_ATOMIC
+#if __GNUC_PREREQ(11, 0)
+  STATIC_ASSERT(__alignof__(MDBX_atomic_uint64_t) >= sizeof(uint64_t));
+#endif /* GNU C >= 11 */
 #ifdef MDBX_HAVE_C11ATOMICS
   assert(atomic_is_lock_free(MDBX_c11a_rw(uint64_t, p)));
   atomic_store_explicit(MDBX_c11a_rw(uint64_t, p), value, mo_c11_store(order));