diff --git a/disk/part_efi.c b/disk/part_efi.c
index bea8b20..fb221ee 100644
--- a/disk/part_efi.c
+++ b/disk/part_efi.c
@@ -24,7 +24,7 @@
 
 DECLARE_GLOBAL_DATA_PTR;
 
-#ifdef HAVE_BLOCK_DEVICE
+#ifdef CONFIG_HAVE_BLOCK_DEVICE
 /**
  * efi_crc32() - EFI version of crc32 function
  * @buf: buffer to calculate crc32 of