diff --git a/plugins/SliceInfoPlugin/SliceInfo.py b/plugins/SliceInfoPlugin/SliceInfo.py
index 047a03575d..b691cce387 100644
--- a/plugins/SliceInfoPlugin/SliceInfo.py
+++ b/plugins/SliceInfoPlugin/SliceInfo.py
@@ -87,7 +87,8 @@ class SliceInfo(Extension):
             material_radius = 0.5 * global_container_stack.getProperty("material_diameter", "value")
 
             # TODO: Send material per extruder instead of mashing it on a pile
-            material_used = math.pi * material_radius * material_radius * sum(print_information.materialLengths) #Volume of all materials used
+            material_used = [str(math.pi * material_radius * material_radius * material_length) for material_length in print_information.materialLengths]
+            material_used = ",".join(material_used)
 
             # Get model information (bounding boxes, hashes and transformation matrix)
             models_info = []
@@ -145,4 +146,4 @@ class SliceInfo(Extension):
         except Exception as e:
             # We really can't afford to have a mistake here, as this would break the sending of g-code to a device
             # (Either saving or directly to a printer). The functionality of the slice data is not *that* important.
-            Logger.log("e", "Exception raised while sending slice info: %s" %(repr(e))) # But we should be notified about these problems of course.
\ No newline at end of file
+            Logger.log("e", "Exception raised while sending slice info: %s" %(repr(e))) # But we should be notified about these problems of course.