diff --git a/src/Generators/Text.php b/src/Generators/Text.php
index 4a368c63ff..895333eb27 100644
--- a/src/Generators/Text.php
+++ b/src/Generators/Text.php
@@ -231,9 +231,9 @@ protected function printCodeComparisonBlock(\DOMNode $node)
             }
 
             echo '| ';
-            echo $firstLineText.str_repeat(' ', (47 - strlen($firstLineText)));
+            echo $firstLineText.str_repeat(' ', max(0, (47 - strlen($firstLineText))));
             echo '| ';
-            echo $secondLineText.str_repeat(' ', (48 - strlen($secondLineText)));
+            echo $secondLineText.str_repeat(' ', max(0, (48 - strlen($secondLineText))));
             echo '|'.PHP_EOL;
         }//end for