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-rw-r--r--IkiWiki/Plugin/editdiff.pm4
1 files changed, 2 insertions, 2 deletions
diff --git a/IkiWiki/Plugin/editdiff.pm b/IkiWiki/Plugin/editdiff.pm
index d45c73e8f..9872e9686 100644
--- a/IkiWiki/Plugin/editdiff.pm
+++ b/IkiWiki/Plugin/editdiff.pm
@@ -46,10 +46,10 @@ sub diff ($$) { #{{{
sub formbuilder_setup { #{{{
my %params=@_;
my $form=$params{form};
- my $page=$form->field("page");
- return if $form->field("do") ne "edit";
+ return if defined ! $form->field("do") || $form->field("do") ne "edit";
+ my $page=$form->field("page");
$page = IkiWiki::possibly_foolish_untaint($page);
return unless exists $pagesources{$page};