diff --git a/src/backends/pgfplotsx.jl b/src/backends/pgfplotsx.jl
index 1527b2c5..2370707f 100644
--- a/src/backends/pgfplotsx.jl
+++ b/src/backends/pgfplotsx.jl
@@ -247,6 +247,7 @@ function (pgfx_plot::PGFPlotsXPlot)(plt::Plot{PGFPlotsXBackend})
                 push!(
                     axis_opt,
                     string("colorbar", pgfx_get_colorbar_pos(sp[:colorbar])) => nothing,
+                    "colorbar/width" => "2mm",
                     "colorbar style" => colorbar_style,
                     "point meta max" => get_clims(sp)[2],
                     "point meta min" => get_clims(sp)[1],