diff --git a/engine/src/core/com/jme3/util/JmeFormatter.java b/engine/src/core/com/jme3/util/JmeFormatter.java
index 998438a4f..97749cf32 100644
--- a/engine/src/core/com/jme3/util/JmeFormatter.java
+++ b/engine/src/core/com/jme3/util/JmeFormatter.java
@@ -59,7 +59,7 @@ public class JmeFormatter extends Formatter {
 
     @Override
     public String format(LogRecord record) {
-        StringBuffer sb = new StringBuffer();
+        StringBuilder sb = new StringBuilder();
 
         calendar.setTime(record.getMillis());
         args[0] = calendar;