diff --git a/src/backends/plotly.jl b/src/backends/plotly.jl
index 9d7126b0..eda984c9 100644
--- a/src/backends/plotly.jl
+++ b/src/backends/plotly.jl
@@ -669,6 +669,8 @@ function plotly_series_shapes(plt::Plot, series::Series)
         d_outs[i] = d_out
     end
     if series[:fill_z] != nothing
+        push!(d_outs, plotly_colorbar_hack(series, base_d, :fill))
+    elseif series[:line_z] != nothing
         push!(d_outs, plotly_colorbar_hack(series, base_d, :line))
     end
     d_outs
diff --git a/src/recipes.jl b/src/recipes.jl
index 82efc3fa..611c8407 100644
--- a/src/recipes.jl
+++ b/src/recipes.jl
@@ -407,7 +407,7 @@ end
     end
     ensure_gradient!(plotattributes, :fillcolor, :fillalpha)
     fill_z := fz
-    line_z --> fz
+    line_z := fz
     x := x_pts
     y := y_pts
     z := nothing
diff --git a/src/utils.jl b/src/utils.jl
index 80d5487f..b9ab6705 100644
--- a/src/utils.jl
+++ b/src/utils.jl
@@ -643,17 +643,12 @@ end
 function get_fillcolor(series, i::Int = 1)
     fc = series[:fillcolor]
     fz = series[:fill_z]
-    lz = series[:line_z]
-    if fz == nothing && lz == nothing
+    if fz == nothing
         isa(fc, ColorGradient) ? fc : _cycle(fc, i)
     else
         cmin, cmax = get_clims(series[:subplot])
         grad = isa(fc, ColorGradient) ? fc : cgrad()
-        if fz != nothing
-            grad[clamp((_cycle(fz, i) - cmin) / (cmax - cmin), 0, 1)]
-        elseif lz != nothing
-            grad[clamp((_cycle(lz, i) - cmin) / (cmax - cmin), 0, 1)]
-        end
+        grad[clamp((_cycle(fz, i) - cmin) / (cmax - cmin), 0, 1)]
     end
 end