diff --git a/headers/posix/assert.h b/headers/posix/assert.h
index 0f7bb74548..bf3df7f603 100644
--- a/headers/posix/assert.h
+++ b/headers/posix/assert.h
@@ -52,6 +52,7 @@ extern void __assert_perror_fail(int error, const char *file,
 #	define assert(condition) ((void)0)
 #endif
 
-#if defined(__STDC_VERSION__) && __STDC_VERSION__ >= 201112L && !defined(static_assert)
+#if defined(__STDC_VERSION__) && __STDC_VERSION__ >= 201112L && __STDC_VERSION__ <= 201710L \
+    && !defined(static_assert) && !defined(__cplusplus)
 #	define static_assert _Static_assert
 #endif