diff --git a/MD_STD.php b/MD_STD.php
index abf98dd..b9e1578 100644
--- a/MD_STD.php
+++ b/MD_STD.php
@@ -412,7 +412,7 @@ final class MD_STD {
      *
      * @return void
      */
-    public static function ensure_file(string $filepath, array $accepted_mimetype = []) {
+    public static function ensure_file(string $filepath, array $accepted_mimetype = []):void {
 
         if (!\file_exists($filepath)) {
             throw new MDFileDoesNotExist("File " . basename($filepath) . " does not exist");
@@ -441,9 +441,9 @@ final class MD_STD {
      */
     public static function exec_edit(string $cmds):void {
 
-        $error = \exec($cmds . ' 2>&1');
+        $error = \shell_exec($cmds . ' 2>&1');
         if (!empty($error)) {
-            throw new \Exception('Shell error: ' . $error);
+            throw new \Exception('Shell error: ' . $error . PHP_EOL . PHP_EOL . 'Command was: ' . $cmds);
         }
 
     }