diff --git a/Assets/Python/Modifiers.py b/Assets/Python/Modifiers.py
index 77689b9a0..61e8bcd9e 100644
--- a/Assets/Python/Modifiers.py
+++ b/Assets/Python/Modifiers.py
@@ -408,6 +408,7 @@ def set_historical_enemies():
     # 	so this should be a "last resort" solution, other methods are always preferable
     for civ1, civ2, value in HISTORICAL_ENEMIES:
         gc.setHistoricalEnemyAICheat(civ1, civ2, value)
+        gc.setHistoricalEnemyAICheat(civ2, civ1, -value)
 
 
 def set_other_parameters():
diff --git a/Assets/Python/data/MiscData.py b/Assets/Python/data/MiscData.py
index 1c1628f83..480180469 100644
--- a/Assets/Python/data/MiscData.py
+++ b/Assets/Python/data/MiscData.py
@@ -141,15 +141,10 @@
 
 HISTORICAL_ENEMIES = [
     (Civ.OTTOMAN, Civ.BULGARIA, 10),
-    (Civ.BULGARIA, Civ.OTTOMAN, -10),
     (Civ.CASTILE, Civ.CORDOBA, 10),
-    (Civ.CORDOBA, Civ.CASTILE, -10),
     (Civ.PORTUGAL, Civ.CASTILE, 10),
-    (Civ.CASTILE, Civ.PORTUGAL, -10),
     (Civ.AUSTRIA, Civ.HUNGARY, 10),
-    (Civ.HUNGARY, Civ.AUSTRIA, -10),
     (Civ.AUSTRIA, Civ.GERMANY, 10),
-    (Civ.GERMANY, Civ.AUSTRIA, -10),
 ]
 
 MODNET_EVENTS = {