diff --git a/src/backends/gr.jl b/src/backends/gr.jl
index 0e60f0f5..91b4855d 100644
--- a/src/backends/gr.jl
+++ b/src/backends/gr.jl
@@ -914,8 +914,8 @@ function gr_display(sp::Subplot{GRBackend}, w, h, viewport_canvas)
 
 
         elseif st == :image
-            img = series[:z].surf
-            h, w = size(img)
+            z = transpose_z(series, series[:z].surf, true)
+            h, w = size(z)
             if eltype(z) <: Colors.AbstractGray
                 grey = round(UInt8, float(z) * 255)
                 rgba = map(c -> UInt32( 0xff000000 + Int(c)<<16 + Int(c)<<8 + Int(c) ), grey)