diff --git a/UM/Mesh/MeshWriter.py b/UM/Mesh/MeshWriter.py
index e9ad3d2798..ccaf4f4503 100644
--- a/UM/Mesh/MeshWriter.py
+++ b/UM/Mesh/MeshWriter.py
@@ -12,7 +12,7 @@ class MeshWriter(FileWriter):
     def __init__(self, *args, **kwargs):
         super().__init__(*args, **kwargs)
 
-    def write(self, stream, node, mode = FileWriter.OutputMode.BinaryMode):
+    def write(self, stream, node, mode = FileWriter.OutputMode.BinaryMode, **kwargs):
         """Output a collection of nodes to stream in such a way that it makes sense
         for the file format.
 
@@ -22,6 +22,7 @@ def write(self, stream, node, mode = FileWriter.OutputMode.BinaryMode):
 
         :param stream: :type{IOStream} The stream to output to.
         :param node: A collection of scene nodes to write to the stream.
+        :param kwargs extra arguments to customize the output (e.g. target mime_type)
         """
 
         raise NotImplementedError("MeshWriter plugin was not correctly implemented, no write was specified")
diff --git a/plugins/FileHandlers/OBJWriter/OBJWriter.py b/plugins/FileHandlers/OBJWriter/OBJWriter.py
index b30e7e5a21..f214f3add9 100644
--- a/plugins/FileHandlers/OBJWriter/OBJWriter.py
+++ b/plugins/FileHandlers/OBJWriter/OBJWriter.py
@@ -11,7 +11,7 @@
 catalog = i18nCatalog("uranium")
 
 class OBJWriter(MeshWriter):
-    def write(self, stream, nodes, mode = MeshWriter.OutputMode.TextMode):
+    def write(self, stream, nodes, mode = MeshWriter.OutputMode.TextMode, **kwargs):
         """Writes the specified nodes to a stream in the OBJ format.
 
         :param stream: The stream to write the OBJ data to.
diff --git a/plugins/FileHandlers/STLWriter/STLWriter.py b/plugins/FileHandlers/STLWriter/STLWriter.py
index 99112d263b..94f9d4285a 100644
--- a/plugins/FileHandlers/STLWriter/STLWriter.py
+++ b/plugins/FileHandlers/STLWriter/STLWriter.py
@@ -12,7 +12,7 @@
 catalog = i18nCatalog("uranium")
 
 class STLWriter(MeshWriter):
-    def write(self, stream, nodes, mode = MeshWriter.OutputMode.TextMode):
+    def write(self, stream, nodes, mode = MeshWriter.OutputMode.TextMode, **kwargs):
         """Write the specified sequence of nodes to a stream in the STL format.
 
         :param stream: The output stream to write to.
diff --git a/plugins/LocalFileOutputDevice/LocalFileOutputDevice.py b/plugins/LocalFileOutputDevice/LocalFileOutputDevice.py
index 55d7d04e71..ae8f028462 100644
--- a/plugins/LocalFileOutputDevice/LocalFileOutputDevice.py
+++ b/plugins/LocalFileOutputDevice/LocalFileOutputDevice.py
@@ -176,6 +176,8 @@ def _performWrite(self, file_name, selected_type, file_handler, nodes, silent_sa
                 Logger.log("e", "Unrecognised OutputMode.")
                 return None
 
+            writer_args["mime_type"] = selected_type["mime_type"]
+
             job = WriteFileJob(file_writer, stream, nodes, mode, writer_args)
             job.setFileName(file_name)
             if not silent_save: