diff --git a/burnman/classes/anisotropicsolution.py b/burnman/classes/anisotropicsolution.py
index 28681cfc..b6fc15f0 100644
--- a/burnman/classes/anisotropicsolution.py
+++ b/burnman/classes/anisotropicsolution.py
@@ -599,7 +599,7 @@ def _d2Fdqdz(self):
     @material_property
     def _d2Fdqdq_fixed_epsT_pinv(self):
         """
-        The second derivative of the Helmholtz energy
+        The inverse of the second derivative of the Helmholtz energy
         with respect to the structure parameters at constant
         strain and temperature. Often referred to as the
         susceptibility matrix.