diff --git a/src/octoprint/gcodefiles.py b/src/octoprint/gcodefiles.py
index 472a6ba1..0c439bfa 100644
--- a/src/octoprint/gcodefiles.py
+++ b/src/octoprint/gcodefiles.py
@@ -17,7 +17,7 @@ from octoprint.events import eventManager
 
 from werkzeug.utils import secure_filename
 
-SUPPORTED_EXTENSIONS=["gcode", "gco", "stl"]
+SUPPORTED_EXTENSIONS=["gcode", "gco", "stl", "g"]
 
 class GcodeManager:
 	def __init__(self):