diff --git a/printer_webui/util/comm.py b/printer_webui/util/comm.py
index dd2b5ab9..fc9ff30e 100644
--- a/printer_webui/util/comm.py
+++ b/printer_webui/util/comm.py
@@ -242,7 +242,7 @@ class MachineCom(object):
 		return self._gcodePos
 	
 	def getPrintTime(self):
-		return time.time() - self._printStartTime
+		return time.time() - self._printStartTime100
 
 	def getPrintTimeRemainingEstimate(self):
 		if self._printStartTime100 == None or self.getPrintPos() < 200: