diff --git a/inc/ocf_def.h b/inc/ocf_def.h
index 740a46f..24503b7 100644
--- a/inc/ocf_def.h
+++ b/inc/ocf_def.h
@@ -234,6 +234,9 @@ typedef enum {
  * OCF supported cache line sizes in bytes
  */
 typedef enum {
+	ocf_cache_line_size_none = 0,
+		/*!< None */
+
 	ocf_cache_line_size_4 = 4 * KiB,
 		/*!< 4 kiB */
 
diff --git a/src/mngt/ocf_mngt_cache.c b/src/mngt/ocf_mngt_cache.c
index 10ba9b4..60b2561 100644
--- a/src/mngt/ocf_mngt_cache.c
+++ b/src/mngt/ocf_mngt_cache.c
@@ -1594,7 +1594,7 @@ static int _ocf_mngt_cache_validate_device_cfg(
 	if (device_cfg->uuid.size > OCF_VOLUME_UUID_MAX_SIZE)
 		return -OCF_ERR_INVAL;
 
-	if (device_cfg->cache_line_size &&
+	if (device_cfg->cache_line_size != ocf_cache_line_size_none &&
 		!ocf_cache_line_size_is_valid(device_cfg->cache_line_size))
 		return -OCF_ERR_INVALID_CACHE_LINE_SIZE;