diff --git a/data/campaigns/Delfadors_Memoirs/scenarios/18_The_Portal_of_Doom.cfg b/data/campaigns/Delfadors_Memoirs/scenarios/18_The_Portal_of_Doom.cfg
index 57b2552db1e..cb8c2c23c70 100644
--- a/data/campaigns/Delfadors_Memoirs/scenarios/18_The_Portal_of_Doom.cfg
+++ b/data/campaigns/Delfadors_Memoirs/scenarios/18_The_Portal_of_Doom.cfg
@@ -442,10 +442,7 @@
                     id=Delfador
                 [/not]
             [/filter]
-            [put_to_recall_list]
-                id=$unit.id
-                heal=yes
-            [/put_to_recall_list]
+            {DELFADOR_ESCAPED_UNITS}
         [/event]
 
         [event]
@@ -485,6 +482,8 @@
                         time=10
                     [/delay]
                     {COLOR_ADJUST 0 0 0}
+                    {MEMOIRS_UNSTORE_UNITS delfador_escaped_units}
+                    {CLEAR_VARIABLE delfador_escaped_units}
                     [endlevel]
                         result=victory
                     [/endlevel]
diff --git a/data/campaigns/Delfadors_Memoirs/utils/sides.cfg b/data/campaigns/Delfadors_Memoirs/utils/sides.cfg
index 45926c14cbc..aef30ef7280 100644
--- a/data/campaigns/Delfadors_Memoirs/utils/sides.cfg
+++ b/data/campaigns/Delfadors_Memoirs/utils/sides.cfg
@@ -391,6 +391,19 @@
     [/allow_recruit]
 #enddef
 
+# Store units who escape through the tunnel in Portal of Doom (18), so that they can no longer be recalled in the same scenario.
+
+#define DELFADOR_ESCAPED_UNITS
+    [store_unit]
+        kill=yes
+        mode=append
+        variable=delfador_escaped_units
+        [filter]
+            id=$unit.id
+        [/filter]
+    [/store_unit]
+#enddef
+
 # At the beginning of Showdown in the Northern Swamp (19), Kalenz
 # rejoins Delfador. Chantal is not here for this one.