diff --git a/src/ap/pmksa_cache_auth.c b/src/ap/pmksa_cache_auth.c
index 3bb3eeebf..a0c75c123 100644
--- a/src/ap/pmksa_cache_auth.c
+++ b/src/ap/pmksa_cache_auth.c
@@ -42,7 +42,7 @@ static void _pmksa_cache_free_entry(struct rsn_pmksa_cache_entry *entry)
 #ifndef CONFIG_NO_RADIUS
 	radius_free_class(&entry->radius_class);
 #endif /* CONFIG_NO_RADIUS */
-	os_free(entry);
+	bin_clear_free(entry, sizeof(*entry));
 }
 
 
diff --git a/src/rsn_supp/pmksa_cache.c b/src/rsn_supp/pmksa_cache.c
index b5a87fc52..885291a23 100644
--- a/src/rsn_supp/pmksa_cache.c
+++ b/src/rsn_supp/pmksa_cache.c
@@ -35,7 +35,7 @@ static void pmksa_cache_set_expiration(struct rsn_pmksa_cache *pmksa);
 
 static void _pmksa_cache_free_entry(struct rsn_pmksa_cache_entry *entry)
 {
-	os_free(entry);
+	bin_clear_free(entry, sizeof(*entry));
 }