diff --git a/drivers/net/wifi_sim.c b/drivers/net/wifi_sim.c
index 4139e39b3d..89b2b2a979 100644
--- a/drivers/net/wifi_sim.c
+++ b/drivers/net/wifi_sim.c
@@ -747,7 +747,7 @@ static int verify_password(FAR struct wifi_sim_s *sta,
     {
       ret = OK;
     }
-  else if (!memcmp(sta->password, bss->password, strlen(sta->password)))
+  else if (!strncmp(sta->password, bss->password, sizeof(sta->password)))
     {
       ret = OK;
     }