diff --git a/docs/source/InputsDrag.rst b/docs/source/InputsDrag.rst
index 57d5dd59d5c3ee8bb56dc646f149321700c1dc17..6dbb7cf4d048db6349703f2ca742499a27d6d47b 100644
--- a/docs/source/InputsDrag.rst
+++ b/docs/source/InputsDrag.rst
@@ -25,8 +25,8 @@ If the user wishes to use their own drag model, they must
 
   * specify :cpp:`mfix.drag_type = UserDrag` in the inputs file 
 
-  * provide the code in the ComputeDragUser routine in des_drag_K.H to define the coefficient.
-
+  * provide the code in the ComputeDragUser routine in a local usr_drag.cpp file.
+    An example can be found in tests/DEM06-x.
 
 With the variables defined as follows: