diff --git a/setup/setup_sis100_electron.C b/setup/setup_sis100_electron.C
index bdc24b952f47f683ad80014d11bfa5643bea9a77..8819710ac0855ba446935a90727053ee322c8ee9 100644
--- a/setup/setup_sis100_electron.C
+++ b/setup/setup_sis100_electron.C
@@ -7,6 +7,7 @@
  **
  **/
 
+// 2023-04-04 - EC - Downgrade to rich v21a
 // 2023-03-01 - EC - Default FEB23 geometries
 // 2022-09-13 - EC - Replaces rich with v22a
 // 2022-09-11 - EC - Adds v21i beampipe for 10AGeV beampipe
@@ -25,7 +26,7 @@ void setup_sis100_electron()
   TString pipeGeoTag      = "v21d:v21i";
   TString mvdGeoTag       = "v20d_tr";
   TString stsGeoTag       = "v22c";
-  TString richGeoTag      = "v22a";
+  TString richGeoTag      = "v21a";
   TString trdGeoTag       = "v20b_1e";
   TString tofGeoTag       = "v21a_1e";
   TString psdGeoTag       = "v22a";  // Paused or Removed Detector System, placeholder for Forward Wall Detector