diff --git a/CHANGELOG.md b/CHANGELOG.md
index 13c81828..3a4f879f 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -68,6 +68,7 @@ will consitute of a breaking change warranting a new major release:
 - PLOC MPSoC special communication is now scheduled, which allows flash read and flash write
   commands to work.
 - Fixed the MPSoC flash write command.
+- Added missing ACS parameter.
 
 # [v2.0.5] 2023-05-11
 
diff --git a/mission/controller/acs/AcsParameters.cpp b/mission/controller/acs/AcsParameters.cpp
index 03500cc3..792a72ec 100644
--- a/mission/controller/acs/AcsParameters.cpp
+++ b/mission/controller/acs/AcsParameters.cpp
@@ -539,6 +539,9 @@ ReturnValue_t AcsParameters::getParameter(uint8_t domainId, uint8_t parameterId,
         case 0xA:
           parameterWrapper->setVector(nadirModeControllerParameters.quatRef);
           break;
+        case 0xB:
+          parameterWrapper->setVector(nadirModeControllerParameters.refRotRate);
+          break;
         case 0xC:
           parameterWrapper->set(nadirModeControllerParameters.timeElapsedMax);
           break;