diff --git a/src/backends/gr.jl b/src/backends/gr.jl
index c3573614..99782ea1 100644
--- a/src/backends/gr.jl
+++ b/src/backends/gr.jl
@@ -732,10 +732,10 @@ function gr_display(sp::Subplot{GRBackend}, w, h, viewport_canvas)
 
         # recompute data
         if typeof(z) <: Surface
-            if st == :heatmap
-                expand_extrema!(sp[:xaxis], (x[1]-0.5*(x[2]-x[1]), x[end]+0.5*(x[end]-x[end-1])))
-                expand_extrema!(sp[:yaxis], (y[1]-0.5*(y[2]-y[1]), y[end]+0.5*(y[end]-y[end-1])))
-            end
+            # if st == :heatmap
+            #     expand_extrema!(sp[:xaxis], (x[1]-0.5*(x[2]-x[1]), x[end]+0.5*(x[end]-x[end-1])))
+            #     expand_extrema!(sp[:yaxis], (y[1]-0.5*(y[2]-y[1]), y[end]+0.5*(y[end]-y[end-1])))
+            # end
             z = vec(transpose_z(series, z.surf, false))
         elseif ispolar(sp)
             if frng != nothing
diff --git a/src/themes.jl b/src/themes.jl
index 5bdf6fe6..3429585a 100644
--- a/src/themes.jl
+++ b/src/themes.jl
@@ -23,7 +23,7 @@ function theme(s::Symbol; kw...)
     # update the default gradient and other defaults
     thm = PlotThemes._themes[s]
     if thm.gradient != nothing
-        PlotUtils._default_gradient[] = s
+        PlotUtils._default_gradient[] = PlotThemes.gradient_name(s)
     end
     default(;
         bg       = thm.bg_secondary,