diff --git a/drivers/bus/stm32_firewall.c b/drivers/bus/stm32_firewall.c
index b023d1f4fcf7..e69bc8c1a4e7 100644
--- a/drivers/bus/stm32_firewall.c
+++ b/drivers/bus/stm32_firewall.c
@@ -267,7 +267,7 @@ int stm32_firewall_populate_bus(struct stm32_firewall_controller *firewall_contr
 		}
 
 		for (i = 0; i < len; i++) {
-			if (firewall_controller->grant_access(firewall_controller,
+			if (firewall_controller->grant_access(firewalls[i].firewall_ctrl,
 							      firewalls[i].firewall_id)) {
 				/*
 				 * Peripheral access not allowed or not defined.