diff --git a/drivers/st/clk/stm32mp1_clk.c b/drivers/st/clk/stm32mp1_clk.c
index 7e0639eb4d0100c445a2246e9d94dd35b5569e62..c41ead7fe800f4b4cacc4c6e344b3b75d55e54e9 100644
--- a/drivers/st/clk/stm32mp1_clk.c
+++ b/drivers/st/clk/stm32mp1_clk.c
@@ -1177,6 +1177,7 @@ static bool clock_is_always_on(unsigned long id)
 	case CK_AXI:
 	case CK_MPU:
 	case CK_MCU:
+	case RTC:
 		return true;
 	default:
 		return false;