diff --git a/printer.py b/printer.py
index cfbf0bb..96f6277 100644
--- a/printer.py
+++ b/printer.py
@@ -436,7 +436,7 @@ def init_Webservices(self):
 		self.Y_MAX_POS = int(volume[1])
 		self.max_velocity           = toolhead['max_velocity']
 		self.max_accel              = toolhead['max_accel']
-		self.max_accel_to_decel     = toolhead['max_accel_to_decel']
+		self.max_accel_to_decel     = toolhead.get('max_accel_to_decel', -1)
 		self.square_corner_velocity = toolhead['square_corner_velocity']
 
 	def get_gcode_store(self, count=100):
@@ -668,4 +668,4 @@ def preHeat(self, bedtemp, exttemp, toolnum=0):
 		self.setExtTemp(exttemp)
 
 	def setZOffset(self, offset):
-		self.sendGCode('SET_GCODE_OFFSET Z=%s MOVE=1' % offset)
\ No newline at end of file
+		self.sendGCode('SET_GCODE_OFFSET Z=%s MOVE=1' % offset)