diff --git a/src/main/java/com/alibaba/druid/filter/stat/StatFilter.java b/src/main/java/com/alibaba/druid/filter/stat/StatFilter.java
index 679017aa21..5e7cca1635 100644
--- a/src/main/java/com/alibaba/druid/filter/stat/StatFilter.java
+++ b/src/main/java/com/alibaba/druid/filter/stat/StatFilter.java
@@ -453,7 +453,7 @@ public class StatFilter extends FilterEventAdapter implements StatFilterMBean {
                                 }
                             }
                         }
-                        buf.append('"');
+                        buf.append('"');
                     } else if (value instanceof Number) {
                         buf.append(value.toString());
                     } else if (value instanceof java.util.Date) {