diff --git a/drivers/resctrl/mpam_resctrl.c b/drivers/resctrl/mpam_resctrl.c
index b825bd90d4bd..321741a702fe 100644
--- a/drivers/resctrl/mpam_resctrl.c
+++ b/drivers/resctrl/mpam_resctrl.c
@@ -497,7 +497,7 @@ static int read_mon_cdp_safe(struct mpam_resctrl_mon *mon, struct mpam_component
 		if (err)
 			return err;
 
-		*val += code_val + data_val;
+		*val = code_val + data_val;
 		return 0;
 	}