diff --git a/src/backends/gr.jl b/src/backends/gr.jl
index dafa7e35..697e2471 100644
--- a/src/backends/gr.jl
+++ b/src/backends/gr.jl
@@ -668,8 +668,8 @@ function gr_display(sp::Subplot{GRBackend}, w, h, viewport_canvas)
                         color = sp[:xaxis][:foreground_color_axis],
                         rotation = sp[:xaxis][:rotation])
             for (cv, dv) in zip(xticks...)
-                # use xor (⊻) to get the right y coords
-                xi, yi = GR.wctondc(cv, (flip ⊻ mirror) ? ymax : ymin)
+                # use xor ($) to get the right y coords
+                xi, yi = GR.wctondc(cv, (flip $ mirror) ? ymax : ymin)
                 # @show cv dv ymin xi yi flip mirror (flip $ mirror)
                 gr_text(xi, yi + (mirror ? 1 : -1) * 2e-3, string(dv))
             end
@@ -685,8 +685,8 @@ function gr_display(sp::Subplot{GRBackend}, w, h, viewport_canvas)
                         color = sp[:yaxis][:foreground_color_axis],
                         rotation = sp[:yaxis][:rotation])
             for (cv, dv) in zip(yticks...)
-                # use xor (⊻) to get the right y coords
-                xi, yi = GR.wctondc((flip ⊻ mirror) ? xmax : xmin, cv)
+                # use xor ($) to get the right y coords
+                xi, yi = GR.wctondc((flip $ mirror) ? xmax : xmin, cv)
                 # @show cv dv xmin xi yi
                 gr_text(xi + (mirror ? 1 : -1) * 2e-3, yi, string(dv))
             end