diff --git a/docs/source/api/python/techniques/ISISPowder-Polaris-v1.rst b/docs/source/api/python/techniques/ISISPowder-Polaris-v1.rst
index f2da7a50869fd6582f85c2a9aa31f00289ff3978..4806fd5a6542e49f4cdc51e96d39791293718ff4 100644
--- a/docs/source/api/python/techniques/ISISPowder-Polaris-v1.rst
+++ b/docs/source/api/python/techniques/ISISPowder-Polaris-v1.rst
@@ -273,7 +273,7 @@ and :ref:`focus_polaris_isis-powder-diffraction-ref` method.
 This determines which vanadium and empty run numbers
 to use whilst processing.
 
-Accepted values are: **True** or **False**
+Accepted values are: **PDF** or **Rietveld**
 
 *Note: This parameter is not case sensitive*