diff --git a/data/campaigns/Delfadors_Memoirs/utils/items.cfg b/data/campaigns/Delfadors_Memoirs/utils/items.cfg
index e27cce6e4f03..8baa68671d92 100644
--- a/data/campaigns/Delfadors_Memoirs/utils/items.cfg
+++ b/data/campaigns/Delfadors_Memoirs/utils/items.cfg
@@ -51,6 +51,7 @@
                 set_description=_"staff of power"
                 increase_damage=4
                 [set_specials]
+                    mode=append
                     {WEAPON_SPECIAL_MAGICAL}
                 [/set_specials]
             [/effect]
diff --git a/data/campaigns/Heir_To_The_Throne/utils/httt_utils.cfg b/data/campaigns/Heir_To_The_Throne/utils/httt_utils.cfg
index 1f5cf12aa154..65662d419312 100644
--- a/data/campaigns/Heir_To_The_Throne/utils/httt_utils.cfg
+++ b/data/campaigns/Heir_To_The_Throne/utils/httt_utils.cfg
@@ -151,6 +151,7 @@
                                     set_icon=attacks/sword-flaming.png
                                     set_type=fire
                                     [set_specials]
+                                        mode=append
                                         {WEAPON_SPECIAL_MAGICAL}
                                     [/set_specials]
                                     increase_damage=25%