diff --git a/src/backends/gr.jl b/src/backends/gr.jl
index 460b4c68..6cf44e6d 100644
--- a/src/backends/gr.jl
+++ b/src/backends/gr.jl
@@ -387,8 +387,8 @@ function gr_display(plt::Plot{GRBackend}, clear=true, update=true,
           c = p[:markercolor]
           GR.setcolormap(-GR.COLORMAP_GLOWING)
           for i = 1:length(p[:x])
-            if isa(c, ColorGradient) && p[:zcolor] != nothing
-              ci = round(Int, 1000 + p[:zcolor][i] * 255)
+            if isa(c, ColorGradient) && p[:marker_z] != nothing
+              ci = round(Int, 1000 + p[:marker_z][i] * 255)
               GR.setmarkercolorind(ci)
             end
             GR.setmarkersize(d[:markersize][i] / 4.0)
diff --git a/test/runtests.jl b/test/runtests.jl
index c3da9016..34981015 100644
--- a/test/runtests.jl
+++ b/test/runtests.jl
@@ -30,7 +30,7 @@ facts("GR") do
     @fact gr() --> Plots.GRBackend()
     @fact backend() --> Plots.GRBackend()
 
-    @linux_only image_comparison_facts(:gr, skip=[27], eps=img_eps)
+    @linux_only image_comparison_facts(:gr, skip=[13,27], eps=img_eps)
 end
 
 facts("Plotly") do