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-rw-r--r--modules/comment.module2
1 files changed, 1 insertions, 1 deletions
diff --git a/modules/comment.module b/modules/comment.module
index 740bc1131..4b1b0a640 100644
--- a/modules/comment.module
+++ b/modules/comment.module
@@ -458,7 +458,7 @@ function comment_validate_form($edit) {
/*
** Validate filter format
*/
- if (!filter_access($edit['format'])) {
+ if (array_key_exists('format', $edit) && !filter_access($edit['format'])) {
form_set_error('format', t('The supplied input format is invalid.'));
}