diff --git a/desktop_version/src/CustomLevels.h b/desktop_version/src/CustomLevels.h
index cfa6869e..784027fb 100644
--- a/desktop_version/src/CustomLevels.h
+++ b/desktop_version/src/CustomLevels.h
@@ -161,7 +161,7 @@ public:
     Uint32 getonewaycol(void);
     bool onewaycol_override;
 
-    std::vector<std::vector<int>> altstates[numrooms];
+    std::vector<std::vector<int> > altstates[numrooms];
 };
 
 #ifndef CL_DEFINITION