diff --git a/include/dt-bindings/clock/r9a06g032-sysctrl.h b/include/dt-bindings/clock/r9a06g032-sysctrl.h
index 90c0f3dc1ba19ff3ea97608650f4d3e6c3b51b3b..d9d7b8b4f42671f4cec974d20afc0b3eb978d815 100644
--- a/include/dt-bindings/clock/r9a06g032-sysctrl.h
+++ b/include/dt-bindings/clock/r9a06g032-sysctrl.h
@@ -74,6 +74,7 @@
 #define R9A06G032_CLK_DDRPHY_PCLK	81	/* AKA CLK_REF_SYNC_D4 */
 #define R9A06G032_CLK_FW		81	/* AKA CLK_REF_SYNC_D4 */
 #define R9A06G032_CLK_CRYPTO		81	/* AKA CLK_REF_SYNC_D4 */
+#define R9A06G032_CLK_WATCHDOG		82	/* AKA CLK_REF_SYNC_D8 */
 #define R9A06G032_CLK_A7MP		84	/* AKA DIV_CA7 */
 #define R9A06G032_HCLK_CAN0		85
 #define R9A06G032_HCLK_CAN1		86