diff --git a/inc/ocf_err.h b/inc/ocf_err.h
index 2a79c91..f56caed 100644
--- a/inc/ocf_err.h
+++ b/inc/ocf_err.h
@@ -42,9 +42,6 @@ typedef enum {
 	/** Start cache failure */
 	OCF_ERR_START_CACHE_FAIL,
 
-	/** Cache is busy */
-	OCF_ERR_CACHE_IN_USE,
-
 	/** Cache ID does not exist */
 	OCF_ERR_CACHE_NOT_EXIST,
 
diff --git a/inc/ocf_mngt.h b/inc/ocf_mngt.h
index b44c0d3..c82ee2c 100644
--- a/inc/ocf_mngt.h
+++ b/inc/ocf_mngt.h
@@ -163,7 +163,6 @@ void ocf_mngt_cache_read_lock(ocf_cache_t cache,
  * @retval 0 Cache successfully locked
  * @retval -OCF_ERR_CACHE_NOT_EXIST Can not lock cache - cache is already
  *					stopping
- * @retval -OCF_ERR_CACHE_IN_USE Can not lock cache - cache is in use
  * @retval -OCF_ERR_NO_LOCK Lock not acquired
  */
 int ocf_mngt_cache_trylock(ocf_cache_t cache);
@@ -178,7 +177,6 @@ int ocf_mngt_cache_trylock(ocf_cache_t cache);
  * @retval 0 Cache successfully locked
  * @retval -OCF_ERR_CACHE_NOT_EXIST Can not lock cache - cache is already
  *					stopping
- * @retval -OCF_ERR_CACHE_IN_USE Can not lock cache - cache is in use
  * @retval -OCF_ERR_NO_LOCK Lock not acquired
  */
 int ocf_mngt_cache_read_trylock(ocf_cache_t cache);
diff --git a/src/mngt/ocf_mngt_common.c b/src/mngt/ocf_mngt_common.c
index 44afe06..411a2e5 100644
--- a/src/mngt/ocf_mngt_common.c
+++ b/src/mngt/ocf_mngt_common.c
@@ -270,14 +270,8 @@ static void _ocf_mngt_cache_unlock(ocf_cache_t cache,
 
 int ocf_mngt_cache_lock_init(ocf_cache_t cache)
 {
-	int result;
-
-	result = ocf_async_lock_init(&cache->lock,
+	return ocf_async_lock_init(&cache->lock,
 			sizeof(struct ocf_mngt_cache_lock_context));
-	if (result)
-		return result;
-
-	return 0;
 }
 
 void ocf_mngt_cache_lock_deinit(ocf_cache_t cache)
diff --git a/tests/functional/pyocf/types/shared.py b/tests/functional/pyocf/types/shared.py
index b23a2fa..356bceb 100644
--- a/tests/functional/pyocf/types/shared.py
+++ b/tests/functional/pyocf/types/shared.py
@@ -21,7 +21,6 @@ class OcfErrorCode(IntEnum):
     OCF_ERR_TOO_MANY_CACHES = auto()
     OCF_ERR_NO_FREE_RAM = auto()
     OCF_ERR_START_CACHE_FAIL = auto()
-    OCF_ERR_CACHE_IN_USE = auto()
     OCF_ERR_CACHE_NOT_EXIST = auto()
     OCF_ERR_CACHE_EXIST = auto()
     OCF_ERR_TOO_MANY_CORES = auto()