diff -ruN latex2html-2017.2.orig/styles/frames.perl latex2html-2017.2/styles/frames.perl
--- latex2html-2017.2.orig/styles/frames.perl	2017-01-23 18:14:25.000000000 +0100
+++ latex2html-2017.2/styles/frames.perl	2017-09-23 15:49:27.184088195 +0200
@@ -706,7 +706,7 @@
     $_[0] =~ s/<(META NAME|LINK)[^>]*>\s*//g;
     $_[0] =~ s/$more_links_mark/$NO_ROBOTS\n$LATEX2HTML_META/g;
     local($savedRS)=$/; $/ = '';
-    $_[0] =~ s/\n{2;}/\n/sg;
+    $_[0] =~ s/\n\{2;}/\n/sg;
     $_[0] =~ s/\s$//s;
     $_[0] =~ s!\s*(\n</HEAD>\n)\s*!$1!s;
     $/ = $savedRS;