diff --git a/library/aesce.c b/library/aesce.c
index 982cad6..4b7e048 100644
--- a/library/aesce.c
+++ b/library/aesce.c
@@ -99,7 +99,7 @@
 #include <sys/auxv.h>
 #endif
 
-#if !defined(MBEDTLS_AES_HAS_NO_PLAIN_C)
+#if !defined(MBEDTLS_AES_DONT_USE_SOFTWARE_CRYPTO)
 /*
  * AES instruction support detection routine
  */