diff --git a/plugins/email-table.php b/plugins/email-table.php
index 235fc634..2b7625a2 100644
--- a/plugins/email-table.php
+++ b/plugins/email-table.php
@@ -16,7 +16,7 @@ class AdminerEmailTable extends Adminer\Plugin {
 	* @param string $subject quoted column name
 	* @param string $message quoted column name
 	*/
-	function __construct(string $table = "email", string $id = "id", string $title = "subject", string $subject = "subject", string $message = "message") {
+	function __construct($table = "email", $id = "id", $title = "subject", $subject = "subject", $message = "message") {
 		$this->table = $table;
 		$this->id = $id;
 		$this->title = $title;
diff --git a/plugins/frames.php b/plugins/frames.php
index 9251ede2..a0d68356 100644
--- a/plugins/frames.php
+++ b/plugins/frames.php
@@ -12,7 +12,7 @@ class AdminerFrames extends Adminer\Plugin {
 	/**
 	* @param bool $sameOrigin allow running from the same origin only
 	*/
-	function __construct(bool $sameOrigin = false) {
+	function __construct($sameOrigin = false) {
 		$this->sameOrigin = $sameOrigin;
 	}
 
diff --git a/plugins/slugify.php b/plugins/slugify.php
index a21ff1e5..526c507c 100644
--- a/plugins/slugify.php
+++ b/plugins/slugify.php
@@ -13,7 +13,7 @@ class AdminerSlugify extends Adminer\Plugin {
 	* @param string $from find these characters ...
 	* @param string $to ... and replace them by these
 	*/
-	function __construct(string $from = 'áčďéěíňóřšťúůýž', string $to = 'acdeeinorstuuyz') {
+	function __construct($from = 'áčďéěíňóřšťúůýž', $to = 'acdeeinorstuuyz') {
 		$this->from = $from;
 		$this->to = $to;
 	}
diff --git a/plugins/sql-gemini.php b/plugins/sql-gemini.php
index 7cda540f..2bdd0880 100644
--- a/plugins/sql-gemini.php
+++ b/plugins/sql-gemini.php
@@ -16,7 +16,7 @@ class AdminerSqlGemini extends Adminer\Plugin {
 	* @param string $apiKey The default key is shared with all users and may run out of quota; get your own API key at: https://aistudio.google.com/apikey
 	* @param string $model Available models: https://ai.google.dev/gemini-api/docs/models#available-models
 	*/
-	function __construct(string $apiKey = 'AIzaSyDWDbPjmvH9_hphsnY_yJGdue42qRMG3do', string $model = "gemini-2.0-flash") {
+	function __construct($apiKey = 'AIzaSyDWDbPjmvH9_hphsnY_yJGdue42qRMG3do', $model = "gemini-2.0-flash") {
 		$this->apiKey = $apiKey;
 		$this->model = $model;
 	}
diff --git a/plugins/sql-log.php b/plugins/sql-log.php
index 2b8aedb5..bcaadf79 100644
--- a/plugins/sql-log.php
+++ b/plugins/sql-log.php
@@ -12,7 +12,7 @@ class AdminerSqlLog extends Adminer\Plugin {
 	/**
 	* @param string $filename defaults to "$database.sql"
 	*/
-	function __construct(string $filename = "") {
+	function __construct($filename = "") {
 		$this->filename = $filename;
 	}
 
diff --git a/plugins/table-indexes-structure.php b/plugins/table-indexes-structure.php
index 265260ab..528adf10 100644
--- a/plugins/table-indexes-structure.php
+++ b/plugins/table-indexes-structure.php
@@ -11,7 +11,7 @@ class AdminerTableIndexesStructure extends Adminer\Plugin {
 	/** Print table structure in tabular format
 	* @param Index[] $indexes data about all indexes on a table
 	*/
-	function tableIndexesPrint(array $indexes): bool {
+	function tableIndexesPrint($indexes): bool {
 		echo "<table>\n";
 		echo "<thead><tr><th>" . Adminer\lang('Name') . "<th>" . Adminer\lang('Type') . "<th>" . Adminer\lang('Columns') . "</thead>\n";
 		foreach ($indexes as $name => $index) {
diff --git a/plugins/tinymce.php b/plugins/tinymce.php
index d451d361..02e9600a 100644
--- a/plugins/tinymce.php
+++ b/plugins/tinymce.php
@@ -10,7 +10,7 @@
 class AdminerTinymce extends Adminer\Plugin {
 	protected $path;
 
-	function __construct(string $path = "tiny_mce/tiny_mce.js") {
+	function __construct($path = "tiny_mce/tiny_mce.js") {
 		$this->path = $path;
 	}