diff --git a/adminer/include/functions.inc.php b/adminer/include/functions.inc.php
index 9be33b0d..0dc2a8fa 100644
--- a/adminer/include/functions.inc.php
+++ b/adminer/include/functions.inc.php
@@ -1129,7 +1129,7 @@ function dump_headers($identifier, $multi_table = false) {
 */
 function dump_csv($row) {
 	foreach ($row as $key => $val) {
-		if (preg_match("~[\"\n,;\t]~", $val) || $val === "") {
+		if (preg_match('~["\n,;\t]|^0|\.\d*0$~', $val) || $val === "") {
 			$row[$key] = '"' . str_replace('"', '""', $val) . '"';
 		}
 	}
diff --git a/changes.txt b/changes.txt
index b9241bc8..e14a02f8 100644
--- a/changes.txt
+++ b/changes.txt
@@ -2,6 +2,7 @@ Adminer 4.7.9-dev:
 Fix XSS in browsers which don't encode URL parameters (bug #775, regression from 4.7.0)
 Elasticsearch, ClickHouse: Do not print response if HTTP code is not 200
 Don't syntax highlight during IME composition (bug #747)
+Quote values with leading and trailing zeroes in CSV export (bug #777)
 MySQL: Do not export names in quotes with sql_mode='ANSI_QUOTES' (bug #749)
 MySQL: Avoid error in PHP 8 when connecting to socket (PR #409)
 MySQL: Don't quote default value of text fields (bug #779)