diff --git a/inc/ocf_err.h b/inc/ocf_err.h
index 7ca5aa6..9af69b1 100644
--- a/inc/ocf_err.h
+++ b/inc/ocf_err.h
@@ -44,6 +44,9 @@ typedef enum {
 	/** Cache metadata found on device */
 	OCF_ERR_METADATA_FOUND,
 
+	/** Metadata on the device doesn't match with metadata in DRAM */
+	OCF_ERR_SUPERBLOCK_MISMATCH,
+
 	/** Invalid volume type */
 	OCF_ERR_INVAL_VOLUME_TYPE,
 
@@ -144,6 +147,7 @@ typedef enum {
 	OCF_ERR_STANDBY_ATTACHED,
 
 	OCF_ERR_MAX = OCF_ERR_STANDBY_ATTACHED,
+
 } ocf_error_t;
 
 #endif /* __OCF_ERR_H__ */
diff --git a/src/mngt/ocf_mngt_cache.c b/src/mngt/ocf_mngt_cache.c
index affe120..61af7f6 100644
--- a/src/mngt/ocf_mngt_cache.c
+++ b/src/mngt/ocf_mngt_cache.c
@@ -2277,7 +2277,7 @@ static void _ocf_mngt_activate_compare_superblock_end(
 
 	if (diff) {
 		ocf_cache_log(cache, log_err, "Superblock mismatch!\n");
-		OCF_PL_FINISH_RET(context->pipeline, -OCF_ERR_INVAL);
+		OCF_PL_FINISH_RET(context->pipeline, -OCF_ERR_SUPERBLOCK_MISMATCH);
 	}
 
 	ocf_pipeline_next(context->pipeline);
diff --git a/tests/functional/pyocf/types/shared.py b/tests/functional/pyocf/types/shared.py
index 8c2c274..51ef230 100644
--- a/tests/functional/pyocf/types/shared.py
+++ b/tests/functional/pyocf/types/shared.py
@@ -21,6 +21,7 @@ class OcfErrorCode(IntEnum):
     OCF_ERR_METADATA_VER = auto()
     OCF_ERR_NO_METADATA = auto()
     OCF_ERR_METADATA_FOUND = auto()
+    OCF_ERR_SUPERBLOCK_MISMATCH = auto()
     OCF_ERR_INVAL_VOLUME_TYPE = auto()
     OCF_ERR_UNKNOWN = auto()
     OCF_ERR_TOO_MANY_CACHES = auto()