diff --git a/tools/dumppdf.py b/tools/dumppdf.py
index 29a11449..dd9c7736 100755
--- a/tools/dumppdf.py
+++ b/tools/dumppdf.py
@@ -16,7 +16,7 @@
 from pdfminer.utils import isnumber
 
 
-ESC_PAT = re.compile(r'[\000-\037&<>()"\042\047\134\177-\377]')
+ESC_PAT = re.compile(r'[\000-\037&<>()"\047\134\177-\377]')
 def e(s):
     return ESC_PAT.sub(lambda m:'&#%d;' % ord(m.group(0)), s)