diff --git a/frappy_psi/sensirion.py b/frappy_psi/sensirion.py
index d921b1e..68debf5 100644
--- a/frappy_psi/sensirion.py
+++ b/frappy_psi/sensirion.py
@@ -21,7 +21,7 @@
 
 """sensirion flow sensor,
 
-onnected via an Arduio Nano on a serial connection
+connected via an Arduio Nano on a serial connection
 shared with the trinamic hepump valve motor
 """