diff --git a/docs/ert/reference/configuration/keywords.rst b/docs/ert/reference/configuration/keywords.rst
index 51650bc1fba..2e6ad306809 100644
--- a/docs/ert/reference/configuration/keywords.rst
+++ b/docs/ert/reference/configuration/keywords.rst
@@ -61,6 +61,7 @@ Keyword name                                                            Required
 :ref:`OBS_CONFIG <obs_config>`                                          NO                                                                      File specifying observations with uncertainties
 :ref:`QUEUE_OPTION <queue_option>`                                      NO                                                                      Set options for an ERT queue system
 :ref:`QUEUE_SYSTEM <queue_system>`                                      NO                                      LOCAL_DRIVER                                System used for running simulation jobs
+:ref:`REALIZATION_MEMORY <realization_memory>`                          NO                                                                      Set the expected memory requirements for a realization
 :ref:`REFCASE <refcase>`                                                NO                                                                      Reference case used for observations and plotting (See HISTORY_SOURCE and SUMMARY)
 :ref:`RUNPATH <runpath>`                                                NO                                      realization-<IENS>/iter-<ITER>  Directory to run simulations; simulations/realization-<IENS>/iter-<ITER>
 :ref:`RUNPATH_FILE <runpath_file>`                                      NO                                      .ert_runpath_list               Name of file with path for all forward models that ERT has run. To be used by user defined scripts to find the realizations