diff --git a/fsl/fsleyes/fsleyes_parseargs.py b/fsl/fsleyes/fsleyes_parseargs.py
index ab964f3e0895d0e7a2cb742ae5c0c12104dc47a1..5b6ba984368db3d6172200c9f05b754ff2f0b219 100644
--- a/fsl/fsleyes/fsleyes_parseargs.py
+++ b/fsl/fsleyes/fsleyes_parseargs.py
@@ -325,13 +325,13 @@ OPTIONS = td.TypeDict({
                        'showXCanvas',
                        'showYCanvas',
                        'showZCanvas'],
-    'LightBoxOpts'  : ['sliceSpacing',
+    'LightBoxOpts'  : ['zax',
+                       'sliceSpacing',
+                       'zrange',
                        'ncols',
                        'nrows',
-                       'zrange',
                        'showGridLines',
-                       'highlightSlice',
-                       'zax'],
+                       'highlightSlice'],
 
     # The order in which properties are listed
     # here is the order in which they are applied.