diff --git a/data/core/units/undead/Corpse_Ghoul.cfg b/data/core/units/undead/Corpse_Ghoul.cfg
index b3b8ad6187c..e6efd97a3cf 100644
--- a/data/core/units/undead/Corpse_Ghoul.cfg
+++ b/data/core/units/undead/Corpse_Ghoul.cfg
@@ -23,7 +23,7 @@ Special Notes:"+{SPECIAL_NOTES_POISON}
     die_sound=ghoul-hit.wav
     {DEFENSE_ANIM "units/undead/ghoul-defend.png" "units/undead/ghoul.png" ghoul-hit.wav }
     [movement_costs]
-        deep_water=100
+        deep_water=99
         shallow_water=3
     [/movement_costs]
     [resistance]
diff --git a/data/core/units/undead/Corpse_Necrophage.cfg b/data/core/units/undead/Corpse_Necrophage.cfg
index 1e1b2a75a8f..99f9c7cd6fc 100644
--- a/data/core/units/undead/Corpse_Necrophage.cfg
+++ b/data/core/units/undead/Corpse_Necrophage.cfg
@@ -22,7 +22,7 @@ Special Notes:"+{SPECIAL_NOTES_POISON}
     die_sound=ghoul-hit.wav
     {DEFENSE_ANIM "units/undead/necrophage-defend.png" "units/undead/necrophage.png" ghoul-hit.wav }
     [movement_costs]
-        deep_water=100
+        deep_water=99
         shallow_water=3
     [/movement_costs]
     [resistance]