diff --git a/python/core/auto_generated/processing/qgsprocessingparameters.sip.in b/python/core/auto_generated/processing/qgsprocessingparameters.sip.in
index 7d7c64fdd5e..efb11c4f2c9 100644
--- a/python/core/auto_generated/processing/qgsprocessingparameters.sip.in
+++ b/python/core/auto_generated/processing/qgsprocessingparameters.sip.in
@@ -379,6 +379,9 @@ used to identify this parameter.
 %Docstring
 Returns the help for the parameter.
 
+This is a descriptive (possibly lengthy), translated string explaining
+the parameter's behavior and use in depth.
+
 .. seealso:: :py:func:`setHelp`
 
 .. versionadded:: 3.16
@@ -388,6 +391,9 @@ Returns the help for the parameter.
 %Docstring
 Sets the ``help`` for the parameter.
 
+The ``help`` string should be a descriptive, translated string explaining
+the parameter's behavior and use in depth.
+
 .. seealso:: :py:func:`help`
 
 .. versionadded:: 3.16
diff --git a/src/core/processing/qgsprocessingparameters.h b/src/core/processing/qgsprocessingparameters.h
index 59bc5f9f12d..09a1b03db80 100644
--- a/src/core/processing/qgsprocessingparameters.h
+++ b/src/core/processing/qgsprocessingparameters.h
@@ -482,6 +482,10 @@ class CORE_EXPORT QgsProcessingParameterDefinition
 
     /**
      * Returns the help for the parameter.
+     *
+     * This is a descriptive (possibly lengthy), translated string explaining
+     * the parameter's behavior and use in depth.
+     *
      * \see setHelp()
      * \since QGIS 3.16
      */
@@ -489,6 +493,10 @@ class CORE_EXPORT QgsProcessingParameterDefinition
 
     /**
      * Sets the \a help for the parameter.
+     *
+     * The \a help string should be a descriptive, translated string explaining
+     * the parameter's behavior and use in depth.
+     *
      * \see help()
      * \since QGIS 3.16
      */