diff --git a/wetb/utils/geometry.py b/wetb/utils/geometry.py
index 79086245e3494faf8d1f2ac41836da08436f65f9..05c7369e4b3a09ecf79e2ea86082933b2e700ae6 100644
--- a/wetb/utils/geometry.py
+++ b/wetb/utils/geometry.py
@@ -168,9 +168,9 @@ def abvrel2xyz(alpha, beta, vrel):
     Parameters
     ----------
     alpha : array_like
-        Pitot tube angle of attack. Zero: Parallel to pitot tube. Positive: Flow from wind side (pressure side)
+        Pitot tube angle of attack [rad]. Zero: Parallel to pitot tube. Positive: Flow from wind side (pressure side)
     beta : array_like
-        Pitot tube side slip angle. Zero: Parallel to pitot tube. Positive: Flow from root side
+        Pitot tube side slip angle [rad]. Zero: Parallel to pitot tube. Positive: Flow from root side
     vrel : array_like
         Pitot tube relative velocity. Positive: flow towards pitot tube