diff --git a/python/damask/orientation.py b/python/damask/orientation.py
index 6a2685a2b..29ecaf626 100644
--- a/python/damask/orientation.py
+++ b/python/damask/orientation.py
@@ -20,7 +20,7 @@ class Quaternion:
     Convention 4: Euler angle triplets are implemented using the Bunge convention,
                   with the angular ranges as [0, 2π],[0, π],[0, 2π]
     Convention 5: the rotation angle ω is limited to the interval [0, π]
-    Convention 6: P = 1 (as default)
+    Convention 6: P = -1 (as default)
     
     w is the real part, (x, y, z) are the imaginary parts.