diff --git a/core/sme/src/csr/csr_link_list.c b/core/sme/src/csr/csr_link_list.c
index 2e52aa4312e3..6bac6d808ccf 100644
--- a/core/sme/src/csr/csr_link_list.c
+++ b/core/sme/src/csr/csr_link_list.c
@@ -103,7 +103,7 @@ static inline void csr_list_insert_head(tListElem *pHead, tListElem *pEntry)
 }
 
 /* Insert pNewEntry before pEntry */
-void csr_list_insert_entry(tListElem *pEntry, tListElem *pNewEntry)
+static void csr_list_insert_entry(tListElem *pEntry, tListElem *pNewEntry)
 {
 	tListElem *pLast;
 	if (!pEntry) {