diff --git a/mod/cal.php b/mod/cal.php
index 0a2a02e53..05ad314b0 100644
--- a/mod/cal.php
+++ b/mod/cal.php
@@ -110,7 +110,7 @@ function cal_content(App $a)
 	$remote_contact = false;
 	$contact_id = 0;
 
-	$owner_uid = $a->data['user']['uid'];
+	$owner_uid = intval($a->data['user']['uid']);
 	$nick = $a->data['user']['nickname'];
 
 	if (!empty($_SESSION['remote']) && is_array($_SESSION['remote'])) {
@@ -290,14 +290,14 @@ function cal_content(App $a)
 	}
 
 	if ($mode == 'export') {
-		if (!intval($owner_uid)) {
+		if (!$owner_uid) {
 			notice(L10n::t('User not found'));
 			return;
 		}
 
 		// Test permissions
 		// Respect the export feature setting for all other /cal pages if it's not the own profile
-		if ((local_user() !== intval($owner_uid)) && !Feature::isEnabled($owner_uid, "export_calendar")) {
+		if ((local_user() !== $owner_uid) && !Feature::isEnabled($owner_uid, "export_calendar")) {
 			notice(L10n::t('Permission denied.') . EOL);
 			$a->internalRedirect('cal/' . $nick);
 		}
@@ -314,7 +314,7 @@ function cal_content(App $a)
 
 			// If it the own calendar return to the events page
 			// otherwise to the profile calendar page
-			if (local_user() === intval($owner_uid)) {
+			if (local_user() === $owner_uid) {
 				$return_path = "events";
 			} else {
 				$return_path = "cal/" . $nick;
diff --git a/mod/photos.php b/mod/photos.php
index 5a477c3bc..1ccfecdef 100644
--- a/mod/photos.php
+++ b/mod/photos.php
@@ -149,7 +149,7 @@ function photos_post(App $a)
 	$can_post  = false;
 	$visitor   = 0;
 
-	$page_owner_uid = $a->data['user']['uid'];
+	$page_owner_uid = intval($a->data['user']['uid']);
 	$community_page = $a->data['user']['page-flags'] == User::PAGE_FLAGS_COMMUNITY;
 
 	if (local_user() && (local_user() == $page_owner_uid)) {
diff --git a/src/Content/Widget.php b/src/Content/Widget.php
index dcfc1d0e3..e8b08d427 100644
--- a/src/Content/Widget.php
+++ b/src/Content/Widget.php
@@ -297,11 +297,13 @@ class Widget
 	{
 		$a = \get_app();
 
-		if (!Feature::isEnabled($a->profile['profile_uid'], 'categories')) {
+		$uid = intval($a->profile['profile_uid']);
+
+		if (!Feature::isEnabled($uid, 'categories')) {
 			return '';
 		}
 
-		$saved = PConfig::get($a->profile['profile_uid'], 'system', 'filetags');
+		$saved = PConfig::get($uid, 'system', 'filetags');
 		if (!strlen($saved)) {
 			return;
 		}
@@ -420,17 +422,19 @@ class Widget
 	{
 		$a = \get_app();
 
-		if (!$a->profile['profile_uid'] || !$a->profile['url']) {
+		$uid = intval($a->profile['profile_uid']);
+
+		if (!$uid || !$a->profile['url']) {
 			return '';
 		}
 
-		if (Feature::isEnabled($a->profile['profile_uid'], 'tagadelic')) {
+		if (Feature::isEnabled($uid, 'tagadelic')) {
 			$owner_id = Contact::getIdForURL($a->profile['url'], 0, true);
 
 			if (!$owner_id) {
 				return '';
 			}
-			return Widget\TagCloud::getHTML($a->profile['profile_uid'], $limit, $owner_id, 'wall');
+			return Widget\TagCloud::getHTML($uid, $limit, $owner_id, 'wall');
 		}
 
 		return '';
diff --git a/src/Content/Widget/CalendarExport.php b/src/Content/Widget/CalendarExport.php
index 84482f638..829d267d8 100644
--- a/src/Content/Widget/CalendarExport.php
+++ b/src/Content/Widget/CalendarExport.php
@@ -30,7 +30,7 @@ class CalendarExport
 			return;
 		}
 
-		$owner_uid = $a->data['user']['uid'];
+		$owner_uid = intval($a->data['user']['uid']);
 
 		// The permission testing is a little bit tricky because we have to respect many cases.
 
diff --git a/src/Model/Profile.php b/src/Model/Profile.php
index 10bd3a1d7..5a2adea9d 100644
--- a/src/Model/Profile.php
+++ b/src/Model/Profile.php
@@ -717,7 +717,7 @@ class Profile
 
 	public static function getAdvanced(App $a)
 	{
-		$uid = $a->profile['uid'];
+		$uid = intval($a->profile['uid']);
 
 		if ($a->profile['name']) {
 			$tpl = Renderer::getMarkupTemplate('profile_advanced.tpl');