diff --git a/OpenRA.Game/Player.cs b/OpenRA.Game/Player.cs
index bb09eac700..f324b495ee 100644
--- a/OpenRA.Game/Player.cs
+++ b/OpenRA.Game/Player.cs
@@ -165,7 +165,7 @@ namespace OpenRA
 			return CanViewActor(a);
 		}
 
-		public bool HasFogVisibility { get { return fogVisibilities.Any(f => f.HasFogVisibility(this)); } }
+		public bool HasFogVisibility { get { return fogVisibilities.Any(f => f.HasFogVisibility()); } }
 
 		#region Scripting interface
 
diff --git a/OpenRA.Game/Traits/TraitsInterfaces.cs b/OpenRA.Game/Traits/TraitsInterfaces.cs
index 8312935b66..de5252edbf 100644
--- a/OpenRA.Game/Traits/TraitsInterfaces.cs
+++ b/OpenRA.Game/Traits/TraitsInterfaces.cs
@@ -193,7 +193,7 @@ namespace OpenRA.Traits
 	public interface IFogVisibilityModifier
 	{
 		bool IsVisible(Actor actor);
-		bool HasFogVisibility(Player byPlayer);
+		bool HasFogVisibility();
 	}
 
 	public interface IRadarColorModifier { Color RadarColorOverride(Actor self); }
diff --git a/OpenRA.Mods.RA/Traits/SupportPowers/GpsPower.cs b/OpenRA.Mods.RA/Traits/SupportPowers/GpsPower.cs
index 202414ef48..16ca4eb1ea 100644
--- a/OpenRA.Mods.RA/Traits/SupportPowers/GpsPower.cs
+++ b/OpenRA.Mods.RA/Traits/SupportPowers/GpsPower.cs
@@ -76,7 +76,7 @@ namespace OpenRA.Mods.RA.Traits
 				Owner.Shroud.ExploreAll(Owner.World);
 		}
 
-		public bool HasFogVisibility(Player byPlayer)
+		public bool HasFogVisibility()
 		{
 			return Granted || GrantedAllies;
 		}