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-rwxr-xr-xduplicates.cgi2
1 files changed, 1 insertions, 1 deletions
diff --git a/duplicates.cgi b/duplicates.cgi
index e95d4b02c..233022eca 100755
--- a/duplicates.cgi
+++ b/duplicates.cgi
@@ -37,7 +37,7 @@ use vars qw($buffer);
# Go directly to the XUL version of the duplicates report (duplicates.xul)
# if the user specified ctype=xul. Adds params if they exist, and directs
# the user to a signed copy of the script in duplicates.jar if it exists.
-if ($::FORM{'ctype'} eq "xul") {
+if ($::FORM{'ctype'} && $::FORM{'ctype'} eq "xul") {
my $params = CanonicaliseParams($::buffer, ["format", "ctype"]);
print "Location: " . (-e "duplicates.jar" ? "duplicates.jar!/" : "") .
"duplicates.xul" . ($params ? "?$params" : "") . "\n\n";