diff --git a/features/cryptocell/FEATURE_CRYPTOCELL310/mbedtls_device.h b/features/cryptocell/FEATURE_CRYPTOCELL310/mbedtls_device.h
index 30048beae8..1fc7f4a156 100644
--- a/features/cryptocell/FEATURE_CRYPTOCELL310/mbedtls_device.h
+++ b/features/cryptocell/FEATURE_CRYPTOCELL310/mbedtls_device.h
@@ -22,7 +22,7 @@
 #define __MBEDTLS_DEVICE__
 
 #define MBEDTLS_PLATFORM_SETUP_TEARDOWN_ALT
-#define MBEDTLS_AES_ALT
+//#define MBEDTLS_AES_ALT
 #define MBEDTLS_CTR_DRBG_USE_128_BIT_KEY
 #define MBEDTLS_SHA1_ALT
 #define MBEDTLS_SHA256_ALT