diff --git a/src/octoprint/util/comm.py b/src/octoprint/util/comm.py
index caf30518..e72541b9 100644
--- a/src/octoprint/util/comm.py
+++ b/src/octoprint/util/comm.py
@@ -1018,6 +1018,9 @@ class MachineCom(object):
 		self._resendDelta = None
 
 		return None
+	def _gcode_M112(self, cmd): # It's an emergency what todo? Canceling the print should be the minimum
+		self.cancelPrint()
+		return cmd
 
 ### MachineCom callback ################################################################################################