From fcb3f6abdce295e9c9dc35b920da76203b007f39 Mon Sep 17 00:00:00 2001
From: Ryan Cramer <ryan@processwire.com>
Date: Wed, 15 Apr 2020 15:44:49 -0400
Subject: [PATCH] Fix issue processwire/processwire-issues#1117

---
 wire/modules/Inputfield/InputfieldEmail.module | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/wire/modules/Inputfield/InputfieldEmail.module b/wire/modules/Inputfield/InputfieldEmail.module
index 48cd9b12..3ed294ea 100644
--- a/wire/modules/Inputfield/InputfieldEmail.module
+++ b/wire/modules/Inputfield/InputfieldEmail.module
@@ -76,7 +76,7 @@ class InputfieldEmail extends InputfieldText {
 		if($changed && $value && $field && $page && $field->hasFlag(Field::flagUnique)) {
 			$fields = $this->wire('fields'); /** @var Fields $fields */
 			$pageId = $fields->tableTools()->valueExists($this->hasField, $value);
-			if($pageId != $page->id) {
+			if($pageId && $pageId != $page->id) {
 				$errors[] = sprintf($this->_('Email “%s” is already in use, please use a different one'), $value);
 			}
 		}