diff --git a/src/consts.jl b/src/consts.jl
index a4072229..372c8adc 100644
--- a/src/consts.jl
+++ b/src/consts.jl
@@ -41,29 +41,30 @@ const _initial_fontsizes =
 const _internal_args =
     [:plot_object, :series_plotindex, :markershape_to_add, :letter, :idxfilter]
 
-const _axis_args = sort(union(collect(keys(_axis_defaults))))
-const _series_args = sort(union(collect(keys(_series_defaults))))
-const _subplot_args = sort(union(collect(keys(_subplot_defaults))))
-const _plot_args = sort(union(collect(keys(_plot_defaults))))
+const _axis_args = Set(keys(_axis_defaults))
+const _series_args = Set(keys(_series_defaults))
+const _subplot_args = Set(keys(_subplot_defaults))
+const _plot_args = Set(keys(_plot_defaults))
 
 const _magic_axis_args = [:axis, :tickfont, :guidefont, :grid, :minorgrid]
 const _magic_subplot_args =
     [:title_font, :legend_font, :legend_title_font, :plot_title_font, :colorbar_titlefont]
 const _magic_series_args = [:line, :marker, :fill]
 const _all_magic_args =
-    sort(union(_magic_axis_args, _magic_series_args, _magic_subplot_args))
+    Set(union(_magic_axis_args, _magic_series_args, _magic_subplot_args))
 
-const _all_axis_args = sort(union([_axis_args; _magic_axis_args]))
-const _all_subplot_args = sort(union([_subplot_args; _magic_subplot_args]))
-const _all_series_args = sort(union([_series_args; _magic_series_args]))
+const _all_axis_args = union(_axis_args, _magic_axis_args)
+const _lettered_all_axis_args = Set([Symbol(letter, kw) for letter in (:x, :y, :z) for kw in _all_axis_args])
+const _all_subplot_args = union(_subplot_args, _magic_subplot_args)
+const _all_series_args = union(_series_args, _magic_series_args)
 const _all_plot_args = _plot_args
 
-const _all_args = sort(union([
-    _all_axis_args
-    _all_subplot_args
-    _all_series_args
-    _all_plot_args
-]))
+const _all_args = union(
+    _lettered_all_axis_args,
+    _all_subplot_args,
+    _all_series_args,
+    _all_plot_args,
+)
 
 # add all pluralized forms to the _keyAliases dict
 for arg in _all_args
diff --git a/test/test_args.jl b/test/test_args.jl
index 49cab920..d5cd509c 100644
--- a/test/test_args.jl
+++ b/test/test_args.jl
@@ -8,3 +8,11 @@ using Plots, Test
     @test hline!(deepcopy(pl), [1.75], z_order = :back)[1].series_list[1][:label] == "y3"
     @test hline!(deepcopy(pl), [1.75], z_order = 2)[1].series_list[2][:label] == "y3"
 end
+
+@testset "Axis Attributes" begin
+    pl = @test_nowarn plot(; tickfont=font(10,"Times"))
+    for axis in (:xaxis, :yaxis, :zaxis)
+        @test pl[1][axis][:tickfontsize] == 10
+        @test pl[1][axis][:tickfontfamily] == "Times"
+    end
+end