diff --git a/library/aesce.c b/library/aesce.c
index 5501068..e2b75a2 100644
--- a/library/aesce.c
+++ b/library/aesce.c
@@ -36,7 +36,7 @@
  * for older compilers.
  */
 #define __ARM_FEATURE_AES    1
-#define NEED_TARGET_OPTIONS
+#define MBEDTLS_NEED_TAGET_OPTIONS
 #endif
 
 #include <string.h>