diff --git a/libc/assert.h b/libc/assert.h
index 74f1ea59a..0bdbd60d5 100644
--- a/libc/assert.h
+++ b/libc/assert.h
@@ -19,6 +19,8 @@ void __assert_fail(const char *, const char *, int) hidden wontreturn relegated;
     }                                           \
   } while (0)
 
+#define static_assert _Static_assert
+
 COSMOPOLITAN_C_END_
 #endif /* !(__ASSEMBLER__ + __LINKER__ + 0) */
 #endif /* COSMOPOLITAN_LIBC_ASSERT_H_ */