diff --git a/library/aes.c b/library/aes.c
index bf7d6cb..52e361a 100644
--- a/library/aes.c
+++ b/library/aes.c
@@ -47,11 +47,14 @@
 #endif
 #endif
 
-#if defined(MBEDTLS_HAVE_ASM) && defined(__i386__) && \
-    !defined(MBEDTLS_HAVE_ASAN)
+#if defined(__i386__)
 #if defined(MBEDTLS_AES_USE_HARDWARE_ONLY)
 #error "MBEDTLS_AES_USE_HARDWARE_ONLY not supported yet for i386."
 #endif
+
+#if defined(MBEDTLS_PADLOCK_C) && !defined(MBEDTLS_HAVE_ASM)
+#error "MBEDTLS_PADLOCK_C defined, but not all prerequisites"
+#endif
 #endif
 
 #if defined(MBEDTLS_PADLOCK_C)