diff --git a/mods/cnc/mod.yaml b/mods/cnc/mod.yaml
index 561f08d87b..0277b7c4ac 100644
--- a/mods/cnc/mod.yaml
+++ b/mods/cnc/mod.yaml
@@ -164,7 +164,6 @@ ServerTraits:
 
 LobbyDefaults:
 	StartingUnitsClass: light
-	FragileAlliances: false
 	TechLevel: Unrestricted
 
 ChromeMetrics:
diff --git a/mods/d2k/mod.yaml b/mods/d2k/mod.yaml
index 34b11311b2..b28cfdf68c 100644
--- a/mods/d2k/mod.yaml
+++ b/mods/d2k/mod.yaml
@@ -157,7 +157,6 @@ ServerTraits:
 
 LobbyDefaults:
 	StartingUnitsClass: none
-	FragileAlliances: false
 	TechLevel: Unrestricted
 
 ChromeMetrics:
diff --git a/mods/ra/mod.yaml b/mods/ra/mod.yaml
index 774ee85cc9..d721eff3e2 100644
--- a/mods/ra/mod.yaml
+++ b/mods/ra/mod.yaml
@@ -167,7 +167,6 @@ ServerTraits:
 
 LobbyDefaults:
 	StartingUnitsClass: none
-	FragileAlliances: false
 	TechLevel: Unrestricted
 
 ChromeMetrics:
diff --git a/mods/ts/mod.yaml b/mods/ts/mod.yaml
index 99b0818321..e3f6d5ef1c 100644
--- a/mods/ts/mod.yaml
+++ b/mods/ts/mod.yaml
@@ -216,7 +216,6 @@ ServerTraits:
 
 LobbyDefaults:
 	StartingUnitsClass: none
-	FragileAlliances: false
 
 ChromeMetrics:
 	common|metrics.yaml