diff --git a/src/backends/pyplot.jl b/src/backends/pyplot.jl
index d09a99c3..0649806d 100644
--- a/src/backends/pyplot.jl
+++ b/src/backends/pyplot.jl
@@ -33,7 +33,8 @@ supportedArgs(::PyPlotBackend) = [
     :orientation,
     :overwrite_figure,
     :polar,
-    :normalize, :weights, :contours, :aspect_ratio
+    :normalize, :weights, :contours, :aspect_ratio,
+    :match_dimensions,
   ]
 supportedAxes(::PyPlotBackend) = _allAxes
 supportedTypes(::PyPlotBackend) = [
diff --git a/src/recipes.jl b/src/recipes.jl
index f11bc839..6d1f30f8 100644
--- a/src/recipes.jl
+++ b/src/recipes.jl
@@ -186,7 +186,7 @@ function apply_series_recipe(d::KW, ::Type{Val{:box}})
             m, l, r, m, m, NaN,         # lower T
             l, l, r, r, l, NaN,         # lower box
             l, l, r, r, l, NaN,         # upper box
-            m, l, r, m, m               # upper T
+            m, l, r, m, m, NaN,         # upper T
         ]
         ycoords = [
             q1, q1, q1, q1, q2, NaN,    # lower T