diff --git a/source/3/3.1/3.1.6/qps.rst b/source/3/3.1/3.1.6/qps.rst
index 285ae230..8ddddfcb 100644
--- a/source/3/3.1/3.1.6/qps.rst
+++ b/source/3/3.1/3.1.6/qps.rst
@@ -1,4 +1,4 @@
-Chapter 3.16 qps
+Chapter 3.1.6 qps
 ================
 
 qps a graphical task manager included with Lubuntu.