diff --git a/plugins/ImageReader/ImageReader.py b/plugins/ImageReader/ImageReader.py
index d6c2827d16..7fb13e915c 100644
--- a/plugins/ImageReader/ImageReader.py
+++ b/plugins/ImageReader/ImageReader.py
@@ -5,7 +5,7 @@ import numpy
 
 import math
 
-from PyQt5.QtGui import QImage, qRed, qGreen, qBlue
+from PyQt5.QtGui import QImage, qRed, qGreen, qBlue, qAlpha
 from PyQt5.QtCore import Qt
 
 from UM.Mesh.MeshReader import MeshReader
@@ -138,6 +138,11 @@ class ImageReader(MeshReader):
             height_data *= scale_vector.y
             height_data += base_height
 
+        if img.hasAlphaChannel():
+            for x in range(0, width):
+                for y in range(0, height):
+                    height_data[y, x] *= qAlpha(img.pixel(x, y)) / 255.0
+
         heightmap_face_count = 2 * height_minus_one * width_minus_one
         total_face_count = heightmap_face_count + (width_minus_one * 2) * (height_minus_one * 2) + 2