diff --git a/tpl/think_exception.tpl b/tpl/think_exception.tpl
index 6c719fd8..e0fbcf36 100644
--- a/tpl/think_exception.tpl
+++ b/tpl/think_exception.tpl
@@ -87,7 +87,7 @@
             box-sizing: border-box;
         font-size:14px;
             font-family: "Century Gothic",Consolas,"Liberation Mono",Courier,Verdana;
-            padding-left: <?php echo isset($source) ? parse_padding($source) : 40; ?>px;
+            padding-left: <?php echo (isset($source) && !empty($source)) ? parse_padding($source) : 40;  ?>px;
         }
         .exception .source-code pre li{
             border-left: 1px solid #ddd;