diff --git a/env/posix/ocf_env_default.h b/env/posix/ocf_env_default.h
index 956a27dc..41c090be 100644
--- a/env/posix/ocf_env_default.h
+++ b/env/posix/ocf_env_default.h
@@ -140,6 +140,16 @@ static inline void env_free(const void *ptr)
 	free((void *)ptr);
 }
 
+static inline void *env_kvzalloc(size_t size, int flags)
+{
+	return env_zalloc(size, 0);
+}
+
+static inline void env_kvfree(const void *ptr)
+{
+	free((void *)ptr);
+}
+
 static inline void *env_vmalloc_flags(size_t size, int flags)
 {
 	return malloc(size);
diff --git a/src/ocf_request.c b/src/ocf_request.c
index c6b76ab9..2be21d3c 100644
--- a/src/ocf_request.c
+++ b/src/ocf_request.c
@@ -315,7 +315,7 @@ int ocf_req_alloc_map(struct ocf_request *req)
 	if (req->map)
 		return 0;
 
-	req->map = env_zalloc(ocf_req_sizeof_map(lines) +
+	req->map = env_kvzalloc(ocf_req_sizeof_map(lines) +
 			ocf_req_sizeof_alock_status(req->core_line_count),
 			ENV_MEM_NOIO);
 	if (!req->map) {
@@ -402,7 +402,7 @@ void ocf_req_put(struct ocf_request *req)
 		env_free(req);
 	} else {
 		if (req->map != req->__map)
-			env_free(req->map);
+			env_kvfree(req->map);
 		env_mpool_del(req->cache->owner->resources.req, req,
 				req->alloc_core_line_count);
 	}