diff --git a/README.md b/README.md
index 35ca824..ae724c3 100644
--- a/README.md
+++ b/README.md
@@ -45,7 +45,7 @@ I would like to maintain a list of online amateur radio receivers on <a href="ht
 
 The filter envelope can be dragged at its ends and moved around to set the passband.
 
-However, if you hold the shift key, you can drag the center line (BFO) or the passband (PBS).
+However, if you hold the shift key, you can drag the center line (BFO) or the whole passband (PBS).
 
 ## Todo