diff --git a/plat/st/stm32mp1/include/stm32mp1_dbgmcu.h b/plat/st/stm32mp1/include/stm32mp1_dbgmcu.h
index 498a4f2..3663bce 100644
--- a/plat/st/stm32mp1/include/stm32mp1_dbgmcu.h
+++ b/plat/st/stm32mp1/include/stm32mp1_dbgmcu.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2015-2019, STMicroelectronics - All Rights Reserved
+ * Copyright (c) 2015-2021, STMicroelectronics - All Rights Reserved
  *
  * SPDX-License-Identifier: BSD-3-Clause
  */
@@ -13,11 +13,4 @@
 int stm32mp1_dbgmcu_get_chip_version(uint32_t *chip_version);
 int stm32mp1_dbgmcu_get_chip_dev_id(uint32_t *chip_dev_id);
 
-/*
- * Freeze watchdog when a debugger is attached, if the security configuration
- * allows it.
- * Return 0 on success, a negative error value otherwise.
- */
-int stm32mp1_dbgmcu_freeze_iwdg2(void);
-
 #endif /* STM32MP1_DBGMCU_H */