diff --git a/library/aes.c b/library/aes.c
index 422e158ca2..a15a80924a 100644
--- a/library/aes.c
+++ b/library/aes.c
@@ -1005,7 +1005,7 @@ int mbedtls_aes_crypt_ecb( mbedtls_aes_context *ctx,
 #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 );
@@ -1047,7 +1047,7 @@ int mbedtls_aes_crypt_cbc( mbedtls_aes_context *ctx,
         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 );