diff --git a/os/hal/ports/ADUCM/ADUCM36x/hal_lld.c b/os/hal/ports/ADUCM/ADUCM36x/hal_lld.c
index a54aaaa18..05cc368d8 100644
--- a/os/hal/ports/ADUCM/ADUCM36x/hal_lld.c
+++ b/os/hal/ports/ADUCM/ADUCM36x/hal_lld.c
@@ -28,6 +28,11 @@
 /* Driver local definitions.                                                 */
 /*===========================================================================*/
 
+/**
+ * @brief   Disable watchdog at startup.
+ */
+#define HAL_CFG_DISABLE_WDG                 TRUE
+
 /*===========================================================================*/
 /* Driver exported variables.                                                */
 /*===========================================================================*/
diff --git a/readme.txt b/readme.txt
index d79463c27..811cae3fa 100644
--- a/readme.txt
+++ b/readme.txt
@@ -82,6 +82,7 @@
 - NEW: Improved boost settings for STM32G4.
 - NEW: Files mcuconf.h for STM32F746, F767, L432, L452, L476, L496 received
        the missing setting STM32_WSPI_QUADSPI1_PRESCALER_VALUE.
+- FIX: Fixed missing constant in ADuCM36x hal_lld.c (bug #1166).
 - FIX: Fixed invalid STM32 TIM21/TIM22 debug freeze setting (bug #1164).
 - FIX: Fixed I2S-related definitions missing in STM32F3xx registry (bug #1162).
 - FIX: Fixed STM32 SDMMCv2 driver invalid initial clock settings (bug #1160).