diff --git a/library/aes.c b/library/aes.c
index b36b81c..c10d4ae 100644
--- a/library/aes.c
+++ b/library/aes.c
@@ -1023,7 +1023,7 @@
 #endif
 
 #if defined(MBEDTLS_PADLOCK_C) && defined(MBEDTLS_HAVE_X86)
-    if( aes_padlock_ace )
+    if( aes_padlock_ace > 0)
     {
         if( mbedtls_padlock_xcryptecb( ctx, mode, input, output ) == 0 )
             return( 0 );
@@ -1065,7 +1065,7 @@
         return( MBEDTLS_ERR_AES_INVALID_INPUT_LENGTH );
 
 #if defined(MBEDTLS_PADLOCK_C) && defined(MBEDTLS_HAVE_X86)
-    if( aes_padlock_ace )
+    if( aes_padlock_ace > 0 )
     {
         if( mbedtls_padlock_xcryptcbc( ctx, mode, length, iv, input, output ) == 0 )
             return( 0 );