diff --git a/tinyfilemanager.php b/tinyfilemanager.php
index 7a2b316..093320f 100644
--- a/tinyfilemanager.php
+++ b/tinyfilemanager.php
@@ -147,7 +147,7 @@ if ($use_auth) {
         ?>
         <div class="path login-form">
                 <img src="https://image.ibb.co/k92AFQ/h3k_logo_dark.png" alt="H3K File manager" style="margin:20px;">
-            <form action="<?php echo htmlspecialchars($_SERVER['PHP_SELF']); ?>" method="post">
+            <form action="" method="post">
                 <label for="fm_usr">Username</label><input type="text" id="fm_usr" name="fm_usr" value="" placeholder="Username" required><br>
                 <label for="fm_pwd">Password</label><input type="password" id="fm_pwd" name="fm_pwd" value="" placeholder="Password" required><br>
                 <input type="submit" value="Login">
@@ -682,7 +682,7 @@ if (isset($_GET['upload']) && !FM_READONLY) {
     <div class="path">
         <p><b>Uploading files</b></p>
         <p class="break-word">Destination folder: <?php echo fm_convert_win(FM_ROOT_PATH . '/' . FM_PATH) ?></p>
-        <form action="<?php echo htmlspecialchars($_SERVER['PHP_SELF']); ?>" method="post" enctype="multipart/form-data">
+        <form action="" method="post" enctype="multipart/form-data">
             <input type="hidden" name="p" value="<?php echo fm_enc(FM_PATH) ?>">
             <input type="hidden" name="upl" value="1">
             <input type="file" name="upload[]"><br>
@@ -715,7 +715,7 @@ if (isset($_POST['copy']) && !FM_READONLY) {
     ?>
     <div class="path">
         <p><b>Copying</b></p>
-        <form action="<?php echo htmlspecialchars($_SERVER['PHP_SELF']); ?>" method="post">
+        <form action="" method="post">
             <input type="hidden" name="p" value="<?php echo fm_enc(FM_PATH) ?>">
             <input type="hidden" name="finish" value="1">
             <?php
@@ -1055,7 +1055,7 @@ if (isset($_GET['chmod']) && !FM_READONLY && !FM_IS_WIN) {
         <p>
             <?php echo 'Full path:'; ?> <?php echo $file_path ?><br>
         </p>
-        <form action="<?php echo htmlspecialchars($_SERVER['PHP_SELF']); ?>" method="post">
+        <form action="" method="post">
             <input type="hidden" name="p" value="<?php echo fm_enc(FM_PATH) ?>">
             <input type="hidden" name="chmod" value="<?php echo fm_enc($file) ?>">
 
@@ -1110,7 +1110,7 @@ $num_files = count($files);
 $num_folders = count($folders);
 $all_files_size = 0;
 ?>
-<form action="<?php echo htmlspecialchars($_SERVER['PHP_SELF']); ?>" method="post">
+<form action="" method="post">
 <input type="hidden" name="p" value="<?php echo fm_enc(FM_PATH) ?>">
 <input type="hidden" name="group" value="1">
 <div class="file-tree-view" id="file-tree-view">