diff --git a/modules/pref-users.php b/modules/pref-users.php
index a57178d6c..aa0da88e1 100644
--- a/modules/pref-users.php
+++ b/modules/pref-users.php
@@ -214,7 +214,7 @@
 				$ids = split(",", db_escape_string($_REQUEST["ids"]));
 
 				foreach ($ids as $id) {
-					if ($id != $_SESSION["uid"]) {
+					if ($id != $_SESSION["uid"] && $id != 1) {
 						db_query($link, "DELETE FROM ttrss_tags WHERE owner_uid = '$id'");
 						db_query($link, "DELETE FROM ttrss_feeds WHERE owner_uid = '$id'");
 						db_query($link, "DELETE FROM ttrss_users WHERE id = '$id'");
diff --git a/prefs.js b/prefs.js
index 6d5e5a90c..43e6b28bd 100644
--- a/prefs.js
+++ b/prefs.js
@@ -465,7 +465,7 @@ function removeSelectedUsers() {
 	
 		if (sel_rows.length > 0) {
 	
-			var ok = confirm(__("Remove selected users?"));
+			var ok = confirm(__("Remove selected users? Neither default admin nor your account will be removed."));
 	
 			if (ok) {
 				notify_progress("Removing selected users...");
diff --git a/sanity_check.php b/sanity_check.php
index d112896e0..d2f0e3177 100644
--- a/sanity_check.php
+++ b/sanity_check.php
@@ -66,6 +66,18 @@
 		$err_msg = "config: DATABASE_BACKED_SESSIONS are currently broken with MySQL";
 	}
 
+	if (SINGLE_USER_MODE) {
+		$link = db_connect(DB_HOST, DB_USER, DB_PASS, DB_NAME);
+
+		if ($link) {
+			$result = db_query($link, "SELECT id FROM ttrss_users WHERE id = 1");
+
+			if (db_num_rows($result) != 1) {	
+				$err_msg = "config: SINGLE_USER_MODE is enabled but default admin account (UID=1) is not found.";
+			}
+		}
+	}
+
 	if (defined('MAIL_FROM')) {
 		$err_msg = "config: MAIL_FROM has been split into DIGEST_FROM_NAME and DIGEST_FROM_ADDRESS";
 	}