diff --git a/safesite/export.py b/safesite/export.py
index 3a7e7149..76112764 100644
--- a/safesite/export.py
+++ b/safesite/export.py
@@ -254,6 +254,8 @@ def exportdoc(a,id):
         return res
         
 
+import re
+ILLEGAL_CHARACTERS_RE = re.compile(r'[\000-\010]|[\013-\014]|[\016-\037]')
 def exportxlsx(a,objs):
     if a =='yh':
         wb = load_workbook(dirname + 'safesite/exportemp/yhdc.xlsx')
@@ -297,7 +299,7 @@ def exportxlsx(a,objs):
             sheet['m'+str(i+4)] = vl[i]['zgbm__partname']
             sheet['n'+str(i+4)] = vl[i]['zgr__name']
             sheet['o'+str(i+4)] = vl[i]['zgqx']
-            sheet['p'+str(i+4)] = vl[i]['yyfx']
+            sheet['p'+str(i+4)] = ILLEGAL_CHARACTERS_RE.sub(r'', vl[i]['yyfx'])
             sheet['q'+str(i+4)] = vl[i]['zgcs']
             sheet['r'+str(i+4)] = vl[i]['zgms']
             sheet['s'+str(i+4)] = vl[i]['shr__name']