diff --git a/code/modules/jobs/job_exp.dm b/code/modules/jobs/job_exp.dm
index 52b4a5de32..91aa958ae9 100644
--- a/code/modules/jobs/job_exp.dm
+++ b/code/modules/jobs/job_exp.dm
@@ -143,7 +143,7 @@ GLOBAL_PROTECT(exp_to_update)
 		L.update_exp_list(mins,ann)
 
 /datum/controller/subsystem/blackbox/proc/update_exp_db()
-	SSdbcore.MassInsert(format_table_name("role_time"),GLOB.exp_to_update,TRUE)
+	SSdbcore.MassInsert(format_table_name("role_time"), GLOB.exp_to_update, "ON DUPLICATE KEY UPDATE minutes = minutes + VALUES(minutes)")
 	LAZYCLEARLIST(GLOB.exp_to_update)
 
 //resets a client's exp to what was in the db.