diff --git a/plat/st/common/include/stm32mp_common.h b/plat/st/common/include/stm32mp_common.h
index 0ff6092..a1ed1ad 100644
--- a/plat/st/common/include/stm32mp_common.h
+++ b/plat/st/common/include/stm32mp_common.h
@@ -142,6 +142,7 @@
 void stm32mp1_fwu_set_boot_idx(void);
 uint32_t stm32_get_and_dec_fwu_trial_boot_cnt(void);
 void stm32_set_max_fwu_trial_boot_cnt(void);
+void stm32_clear_fwu_trial_boot_cnt(void);
 #endif /* PSA_FWU_SUPPORT */
 
 #endif /* STM32MP_COMMON_H */