diff --git a/core/modules/simpletest/simpletest.module b/core/modules/simpletest/simpletest.module
index 7a0638695aa..b99435222f1 100644
--- a/core/modules/simpletest/simpletest.module
+++ b/core/modules/simpletest/simpletest.module
@@ -534,24 +534,24 @@ function simpletest_classloader_register() {
  */
 function simpletest_generate_file($filename, $width, $lines, $type = 'binary-text') {
   $text = '';
-    for ($i = 0; $i < $lines; $i++) {
-      // Generate $width - 1 characters to leave space for the "\n" character.
-      for ($j = 0; $j < $width - 1; $j++) {
-        switch ($type) {
-          case 'text':
-            $text .= chr(rand(32, 126));
-            break;
-          case 'binary':
-            $text .= chr(rand(0, 31));
-            break;
-          case 'binary-text':
-          default:
-            $text .= rand(0, 1);
-            break;
-        }
+  for ($i = 0; $i < $lines; $i++) {
+    // Generate $width - 1 characters to leave space for the "\n" character.
+    for ($j = 0; $j < $width - 1; $j++) {
+      switch ($type) {
+        case 'text':
+          $text .= chr(rand(32, 126));
+          break;
+        case 'binary':
+          $text .= chr(rand(0, 31));
+          break;
+        case 'binary-text':
+        default:
+          $text .= rand(0, 1);
+          break;
       }
-      $text .= "\n";
     }
+    $text .= "\n";
+  }
 
   // Create filename.
   file_put_contents('public://' . $filename . '.txt', $text);