diff --git a/docs/source_docs/user_guide/inputs/model_options.rst b/docs/source_docs/user_guide/inputs/model_options.rst
index 2775c3c19377f31df80f0eaa38f8aa524e67dcbe..7a473ec0d9d3c4c6b2e2d63f64efff6cd63e560a 100644
--- a/docs/source_docs/user_guide/inputs/model_options.rst
+++ b/docs/source_docs/user_guide/inputs/model_options.rst
@@ -83,7 +83,7 @@ The following input is defined using the prefix ``mfix``:
 |                                 |                                                                            |             |                     |
 |                                 | * Defaults to 0.5 if ``mfix.advection_type = MOL``                         |             |                     |
 |                                 | * Defaults to 0.9 if ``mfix.advection_type = Godunov``                     |             |                     |
-|                                 | * ignored if ``mfix.fixed_dt = 1``                                         |             |                     |
+|                                 | * Ignored if ``mfix.fixed_dt > 0``                                         |             |                     |
 +---------------------------------+----------------------------------------------------------------------------+-------------+---------------------+
 | redistribution_type             | Algorithms to address the *'small cell problem'* associated with           |   String    |  StateRedist        |
 |                                 | explicit cut-cell algorithms.                                              |             |                     |