diff --git a/src/thermophysicalModels/chemistryModel/functionObjects/adjustTimeStepToChemistry/adjustTimeStepToChemistry.H b/src/thermophysicalModels/chemistryModel/functionObjects/adjustTimeStepToChemistry/adjustTimeStepToChemistry.H
index 51045803d1..a482d0dcfb 100644
--- a/src/thermophysicalModels/chemistryModel/functionObjects/adjustTimeStepToChemistry/adjustTimeStepToChemistry.H
+++ b/src/thermophysicalModels/chemistryModel/functionObjects/adjustTimeStepToChemistry/adjustTimeStepToChemistry.H
@@ -47,6 +47,7 @@ Usage
     \table
         Property     | Description             | Required    | Default value
         type         | type name: adjustTimeStepToChemistry | yes |
+        phase        | name of the reacting phase | no       |
     \endtable
 
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