diff --git a/mods/cnc/maps/nod10b/map.yaml b/mods/cnc/maps/nod10b/map.yaml
index 7db0ce8f96..5677ab8fb9 100644
--- a/mods/cnc/maps/nod10b/map.yaml
+++ b/mods/cnc/maps/nod10b/map.yaml
@@ -16,6 +16,8 @@ Visibility: MissionSelector
 
 Categories: Campaign
 
+LockPreview: True
+
 Players:
 	PlayerReference@Neutral:
 		Name: Neutral
diff --git a/mods/ra/maps/evacuation/map.yaml b/mods/ra/maps/evacuation/map.yaml
index 2bee7c4191..eb59740f35 100644
--- a/mods/ra/maps/evacuation/map.yaml
+++ b/mods/ra/maps/evacuation/map.yaml
@@ -16,6 +16,8 @@ Visibility: Lobby, MissionSelector
 
 Categories: Mission, Cooperative Mission
 
+LockPreview: True
+
 Players:
 	PlayerReference@Neutral:
 		Name: Neutral
diff --git a/mods/ra/maps/exodus/map.yaml b/mods/ra/maps/exodus/map.yaml
index 61333a3320..1e1c9849c0 100644
--- a/mods/ra/maps/exodus/map.yaml
+++ b/mods/ra/maps/exodus/map.yaml
@@ -16,6 +16,8 @@ Visibility: Lobby, MissionSelector
 
 Categories: Mission, Cooperative Mission
 
+LockPreview: True
+
 Players:
 	PlayerReference@Neutral:
 		Name: Neutral
diff --git a/mods/ra/maps/infiltration/map.yaml b/mods/ra/maps/infiltration/map.yaml
index 1600e1153b..4be8e254f8 100644
--- a/mods/ra/maps/infiltration/map.yaml
+++ b/mods/ra/maps/infiltration/map.yaml
@@ -16,6 +16,8 @@ Visibility: Lobby, MissionSelector
 
 Categories: Mission, Cooperative Mission
 
+LockPreview: True
+
 Players:
 	PlayerReference@Neutral:
 		Name: Neutral
diff --git a/mods/ra/maps/sarin-gas-2-down-under/map.yaml b/mods/ra/maps/sarin-gas-2-down-under/map.yaml
index 47b890f8f9..09c315c3fc 100644
--- a/mods/ra/maps/sarin-gas-2-down-under/map.yaml
+++ b/mods/ra/maps/sarin-gas-2-down-under/map.yaml
@@ -16,6 +16,8 @@ Visibility: MissionSelector
 
 Categories: Mission
 
+LockPreview: True
+
 Players:
 	PlayerReference@Neutral:
 		Name: Neutral