diff --git a/INSTALL b/INSTALL
index e7ff603d3..77e5a0eab 100644
--- a/INSTALL
+++ b/INSTALL
@@ -156,6 +156,8 @@ increase the allowed size of file attachments, for example:
   php_value   upload_max_filesize     5M
   php_value   post_max_size           6M
 
+Note that some PHP environments (php-fpm) may use .user.ini instead of .htaccess.
+
 
 SECURE YOUR INSTALLATION
 ========================
diff --git a/bin/installto.sh b/bin/installto.sh
index c47a8272a..e6e5d4745 100755
--- a/bin/installto.sh
+++ b/bin/installto.sh
@@ -52,6 +52,9 @@ if (strtolower($input) == 'y') {
   if (file_exists("$target_dir/.htaccess")) {
     $htaccess_copied = copy("$target_dir/.htaccess", "$target_dir/.htaccess.orig");
   }
+  if (file_exists("$target_dir/.user.ini")) {
+    $user_ini_copied = copy("$target_dir/.user.ini", "$target_dir/.user.ini.orig");
+  }
 
   $dirs = array('program','installer','bin','SQL','plugins','skins');
   if (is_dir(INSTALL_PATH . 'vendor') && !is_file("$target_dir/composer.json")) {
@@ -65,7 +68,7 @@ if (strtolower($input) == 'y') {
       rcube::raise_error("Failed to execute command: $command", false, true);
     }
   }
-  foreach (array('index.php','.htaccess','config/defaults.inc.php','composer.json-dist','jsdeps.json','CHANGELOG','README.md','UPGRADING','LICENSE','INSTALL') as $file) {
+  foreach (array('index.php','.htaccess','.user.ini','config/defaults.inc.php','composer.json-dist','jsdeps.json','CHANGELOG','README.md','UPGRADING','LICENSE','INSTALL') as $file) {
     $command = "rsync -a --out-format=%n " . INSTALL_PATH . "$file $target_dir/$file";
     if (file_exists(INSTALL_PATH . $file) && (!system($command, $ret) || $ret > 0)) {
       rcube::raise_error("Failed to execute command: $command", false, true);
@@ -86,6 +89,16 @@ if (strtolower($input) == 'y') {
     }
   }
 
+  // Inform the user about .user.ini change
+  if (!empty($user_ini_copied)) {
+    if (file_get_contents("$target_dir/.user.ini") != file_get_contents("$target_dir/.user.ini.orig")) {
+      echo "\n!! Old .user.ini file saved as .user.ini.orig !!";
+    }
+    else {
+      @unlink("$target_dir/.user.ini.orig");
+    }
+  }
+
   echo "\n\n";
 
   if (is_dir("$target_dir/skins/default")) {