diff --git a/texlive-20170520-new-poppler.patch b/texlive-20170520-new-poppler.patch
index 7eff63b..24635d3 100644
--- a/texlive-20170520-new-poppler.patch
+++ b/texlive-20170520-new-poppler.patch
@@ -419,8 +419,8 @@ diff -up texlive-base-20170520/source/texk/web2c/pdftexdir/pdftoepdf.cc.newpoppl
 +*/
 +// begin modification
 +            groupDict = pageDict->lookup("Group");
-+            Dict dic1 = page->getGroup();
-+            Dict dic2 = groupDict.getDict();
++            const Dict& dic1 = page->getGroup();
++            const Dict& dic2 = groupDict.getDict();
 +            // replace dic2 in groupDict with dic1
 +            l = dic2.getLength();
 +            for (i = 0; i < l; i++) {