1 files changed, 4 insertions, 0 deletions

diff --git a/src/WixToolset.Core/CommandLine/CommandLine.cs b/src/WixToolset.Core/CommandLine/CommandLine.cs
index 9db1b2f9..97f79755 100644
--- a/src/WixToolset.Core/CommandLine/CommandLine.cs
+++ b/src/WixToolset.Core/CommandLine/CommandLine.cs
@@ -260,6 +260,10 @@ namespace WixToolset.Core
                 case "transform":
                 case ".mst":
                     return OutputType.Transform;
+
+                case "wixout":
+                case ".wixout":
+                    return OutputType.Wixout;
             }
 
             return OutputType.Unknown;