diff --git a/OpenRA.Mods.Common/ModContent.cs b/OpenRA.Mods.Common/ModContent.cs
index b3d5836f93..306647deec 100644
--- a/OpenRA.Mods.Common/ModContent.cs
+++ b/OpenRA.Mods.Common/ModContent.cs
@@ -43,6 +43,7 @@ namespace OpenRA
 			public readonly SourceType Type = SourceType.Disc;
 
 			// Used to find installation locations for SourceType.Install
+			public readonly string[] RegistryPrefixes = { string.Empty };
 			public readonly string RegistryKey;
 			public readonly string RegistryValue;
 
diff --git a/OpenRA.Mods.Common/Widgets/Logic/Installation/InstallFromDiscLogic.cs b/OpenRA.Mods.Common/Widgets/Logic/Installation/InstallFromDiscLogic.cs
index 549f06ef58..6579952a74 100644
--- a/OpenRA.Mods.Common/Widgets/Logic/Installation/InstallFromDiscLogic.cs
+++ b/OpenRA.Mods.Common/Widgets/Logic/Installation/InstallFromDiscLogic.cs
@@ -481,11 +481,16 @@ namespace OpenRA.Mods.Common.Widgets.Logic
 				if (Platform.CurrentPlatform != PlatformType.Windows)
 					return null;
 
-				var path = Microsoft.Win32.Registry.GetValue(source.RegistryKey, source.RegistryValue, null) as string;
-				if (path == null)
-					return null;
+				foreach (var prefix in source.RegistryPrefixes)
+				{
+					var path = Microsoft.Win32.Registry.GetValue(prefix + source.RegistryKey, source.RegistryValue, null) as string;
+					if (path == null)
+						continue;
 
-				return IsValidSourcePath(path, source) ? path : null;
+					return IsValidSourcePath(path, source) ? path : null;
+				}
+
+				return null;
 			}
 
 			if (source.Type == ModContent.SourceType.Disc)