diff --git a/doc/Extensions/MIB-based-polling.md b/doc/Extensions/MIB-based-polling.md
index 92c6786a4b..50cf7b3fb7 100644
--- a/doc/Extensions/MIB-based-polling.md
+++ b/doc/Extensions/MIB-based-polling.md
@@ -33,7 +33,7 @@ your disk space requirements to grow enormously and rapidly.  As an example,
 enabling MIB-based polling on my test Ruckus ZD1000 wireless controller with
 one (1) AP and one (1) user on that AP resulted in a 5 MB increase in RRD
 space usage for that device.  Each RRD file is around 125 KB in size (on
-x64-64) systems and is pre-allocated, so after the first discovery and poller
+x64-64 systems) and is pre-allocated, so after the first discovery and poller
 run of each devicewith MIB-based polling enabled, disk space should be stable.
 However, monitoring disk usage is your responsibility.  (The good news: you
 can do this with LibreNMS. :-)