diff --git a/Own memory usage: benchmarks over time.md b/Own memory usage: benchmarks over time.md
index ff738f0..5decf86 100644
--- a/Own memory usage: benchmarks over time.md
+++ b/Own memory usage: benchmarks over time.md
@@ -9,10 +9,10 @@ Just a place for me to keep track of comparative memory usage over time. Screens
- Ghostery 5.4.0
- Disconnect 5.18.15
-Before:
+Before benchmark started:
![before](https://raw.githubusercontent.com/gorhill/uBlock/master/doc/benchmarks/mem-usage-20140918-before.png)
-After:
+After benchmark completed:
![after](https://raw.githubusercontent.com/gorhill/uBlock/master/doc/benchmarks/mem-usage-20140918-after.png)
Observations during benchmark: