diff --git a/ChangeLog b/ChangeLog
index 2a7de1067..94aaebaf3 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -2,6 +2,8 @@
         * marksel/mines: Add some random ores in the map.
         * navar_city/apartments/apartment: Move diamond altars so stairs appear at the desired place.
         * world/world_120_109: Add random map with ores.
+        * quests/peterm/DragonQuest/ElectricHatchery,
+        *  quests/peterm/DragonQuest/IceHatchery: Fix generator speed after archetype changes.
 
 2021-01-28 Nicolas Weeger
         * quests/peterm/DragonQuest/ElectricHatchery,
diff --git a/quests/peterm/DragonQuest/ElectricHatchery b/quests/peterm/DragonQuest/ElectricHatchery
index d8bbf4324..13dd83360 100644
--- a/quests/peterm/DragonQuest/ElectricHatchery
+++ b/quests/peterm/DragonQuest/ElectricHatchery
@@ -9,7 +9,7 @@ enter_x 10
 enter_y 24
 msg
 Created:  1994-08-19 peterm (peterm@soda.csua.berkeley.edu)
-Modified: 2021-01-28 Nicolas Weeger
+Modified: 2021-01-29 Nicolas Weeger
 endmsg
 end
 arch cave_15
@@ -518,6 +518,7 @@ arch generate_dragon_electric
 other_arch big_elec
 x 2
 y 27
+speed 0.0008
 end
 arch pstone_2
 x 2
@@ -553,6 +554,7 @@ arch generate_dragon_electric
 other_arch big_elec
 x 3
 y 3
+speed 0.0008
 end
 arch pstone_2
 x 3
@@ -1062,6 +1064,7 @@ arch generate_dragon_electric
 other_arch big_elec
 x 6
 y 6
+speed 0.0008
 end
 arch pstone_2
 x 6
@@ -1716,6 +1719,7 @@ arch generate_dragon_electric
 other_arch big_elec
 x 10
 y 3
+speed 0.0008
 end
 arch pstone_2
 x 10
diff --git a/quests/peterm/DragonQuest/IceHatchery b/quests/peterm/DragonQuest/IceHatchery
index 27ee631af..4775ea49f 100644
--- a/quests/peterm/DragonQuest/IceHatchery
+++ b/quests/peterm/DragonQuest/IceHatchery
@@ -9,7 +9,7 @@ enter_x 4
 enter_y 5
 msg
 Created:  1994-08-19 peterm (peterm@soda.csua.berkeley.edu)
-Modified: 2021-01-28 Nicolas Weeger
+Modified: 2021-01-29 Nicolas Weeger
 endmsg
 end
 arch cave_15
@@ -674,6 +674,7 @@ arch generate_cold_dragon
 other_arch chinese_dragon
 x 3
 y 22
+speed 0.0008
 end
 arch pstone_2
 x 3
@@ -1657,6 +1658,7 @@ arch generate_cold_dragon
 other_arch chinese_dragon
 x 9
 y 13
+speed 0.0008
 end
 arch pstone_2
 x 9
@@ -2310,6 +2312,7 @@ arch generate_cold_dragon
 other_arch chinese_dragon
 x 13
 y 23
+speed 0.0008
 end
 arch pstone_2
 x 13