Index: /issm/trunk-jpl/src/m/classes/SMBpdd.py
===================================================================
--- /issm/trunk-jpl/src/m/classes/SMBpdd.py	(revision 19227)
+++ /issm/trunk-jpl/src/m/classes/SMBpdd.py	(revision 19228)
@@ -51,5 +51,5 @@
 			string="%s\n%s"%(string,fielddisplay(self,'precipitation',['monthly surface precipitation [m/yr water eq], required if pdd is activated and delta18o or mungsm not activated']))
 			if self.isdelta18o:
-				string="%s\n%s"%(string,fielddisplay(self,'delta18o','delta18o, required if pdd is activated and delta18o activated'))
+				string="%s\n%s"%(string,fielddisplay(self,'delta18o','delta18o [per mil], required if pdd is activated and delta18o activated'))
 				string="%s\n%s"%(string,fielddisplay(self,'delta18o_surface','surface elevation of the delta18o site, required if pdd is activated and delta18o activated'))
 				string="%s\n%s"%(string,fielddisplay(self,'temperatures_presentday','monthly present day surface temperatures [K], required if delta18o/mungsm is activated'))