diff --git a/UnrealEngine.gitignore b/UnrealEngine.gitignore
index b70ad5aae2..2d01a44368 100644
--- a/UnrealEngine.gitignore
+++ b/UnrealEngine.gitignore
@@ -35,6 +35,7 @@
 *.xcodeproj
 *.xcworkspace
 *.sln
+*.slnx
 *.suo
 *.opensdf
 *.sdf