diff --git a/adminer/drivers/mysql.inc.php b/adminer/drivers/mysql.inc.php
index 82ea8fc1..e3fff80d 100644
--- a/adminer/drivers/mysql.inc.php
+++ b/adminer/drivers/mysql.inc.php
@@ -810,8 +810,7 @@ if (!defined("DRIVER")) {
 		queries("SET sql_mode = 'NO_AUTO_VALUE_ON_ZERO'");
 		foreach ($tables as $table) {
 			$name = ($target == DB ? table("copy_$table") : idf_escape($target) . "." . table($table));
-			if (!queries("\nDROP TABLE IF EXISTS $name")
-				|| !queries("CREATE TABLE $name LIKE " . table($table))
+			if (!queries("CREATE TABLE $name LIKE " . table($table))
 				|| !queries("INSERT INTO $name SELECT * FROM " . table($table))
 			) {
 				return false;
@@ -826,9 +825,7 @@ if (!defined("DRIVER")) {
 		foreach ($views as $table) {
 			$name = ($target == DB ? table("copy_$table") : idf_escape($target) . "." . table($table));
 			$view = view($table);
-			if (!queries("DROP VIEW IF EXISTS $name")
-				|| !queries("CREATE VIEW $name AS $view[select]") //! USE to avoid db.table
-			) {
+			if (!queries("CREATE VIEW $name AS $view[select]")) { //! USE to avoid db.table
 				return false;
 			}
 		}
diff --git a/changes.txt b/changes.txt
index d76eb9cf..6cdbe4d5 100644
--- a/changes.txt
+++ b/changes.txt
@@ -4,6 +4,7 @@ Warn when using password with leading or trailing spaces
 Hide import from server if no path
 Fix inline editing of empty cells (regression from 4.6.3)
 Allow adding more than two indexes and forign key columns at a time (regression from 4.4.0)
+Avoid overwriting existing tables when copying tables (bug #642)
 Fix function change with set data type
 Increase username maxlength to 80 (bug #623)
 Make maxlength in all fields a soft limit