diff --git a/lib/cache_mngt.c b/lib/cache_mngt.c
index 4d3d6ff..9f8a742 100644
--- a/lib/cache_mngt.c
+++ b/lib/cache_mngt.c
@@ -38,7 +38,7 @@ static NL_RW_LOCK(cache_ops_lock);
  * @{
  */
 
-struct nl_cache_ops *__nl_cache_ops_lookup(const char *name)
+static struct nl_cache_ops *__nl_cache_ops_lookup(const char *name)
 {
 	struct nl_cache_ops *ops;