diff --git a/ChangeLog b/ChangeLog
index 8e10556fc..ce72913fd 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,7 @@
+Change recipes for potion of fire and cold resistance, based on the contents of the Fire Temple quest.
+formulae
+Nicolas Weeger 2021-02-09
+
 Add slicing knife to uncommon items treasure list.
 treasures.trs
 Nicolas Weeger 2021-02-09
diff --git a/formulae b/formulae
index 4f5f463f6..3a2554f03 100644
--- a/formulae
+++ b/formulae
@@ -1601,7 +1601,7 @@ ingred ogre's heart,3 water of the wise,pile of philosophical salt,pirate's hear
 # -- fire immune
 # (quest: peterm/FireTemple)
 Object NONE
-arch potion_cold
+arch potion_fire
 chance 0
 diff 50
 exp 500000
@@ -1613,7 +1613,7 @@ keycode fire alchemist
 #
 # -- cold immune
 Object NONE
-arch potion_fire
+arch potion_cold
 chance 1
 diff 50
 exp 500000