diff --git a/library/aesni.c b/library/aesni.c
index 9da9f1b..8e5bd55 100644
--- a/library/aesni.c
+++ b/library/aesni.c
@@ -36,7 +36,7 @@
 #pragma GCC push_options
 #pragma GCC target ("pclmul,sse2,aes")
 #define MBEDTLS_POP_TARGET_PRAGMA
-#elif defined(__clang__)
+#elif defined(__clang__) && (__clang_major__ >= 5)
 #pragma clang attribute push (__attribute__((target("pclmul,sse2,aes"))), apply_to=function)
 #define MBEDTLS_POP_TARGET_PRAGMA
 #endif