--- junos.pm.negative-temp	2019-02-12 21:16:55.165617409 -0500
+++ junos.pm	2019-02-19 09:39:52.374354729 -0500
@@ -206,7 +206,7 @@
 	/ backplane temperature/ && next;
 	/(\s*Power supply.*), temperature/ &&
 		ProcessHistory("","","","# $1\n") && next;
-	/(\s*.+) +\d+ degrees C.*$/ &&
+	/(\s*.+) +-?\d+ degrees C.*$/ &&
 		ProcessHistory("","","","# $1\n") && next;
 	/(^.*\S)\s+ Spinning at .*$/ &&
 		ProcessHistory("","","","# $1\n") && next;
