diff --git a/BIND-9-Memory-Explained.md b/BIND-9-Memory-Explained.md
index dcaf0fa..5654ae5 100644
--- a/BIND-9-Memory-Explained.md
+++ b/BIND-9-Memory-Explained.md
@@ -167,6 +167,8 @@ jeprof \
 	/usr/sbin/named **HEAP FILE** --pdf > "jeprof.pdf"
 ```
 
+See [explanation how to read the chart - same as for Google pprof](https://gperftools.github.io/gperftools/heapprofile.html).
+
 More options can be found in [jeprof](https://manpages.ubuntu.com/manpages/impish/man1/jeprof.1.html) manual page. These must be interpreted with knowledge of the BIND 9 internals. That said, if you are reporting what you think is a memory issue, attaching output of the `jeprof` will certainly help.
 
 ### Memory Profiling Example