diff --git a/core/data/base/CbmDigiData.h b/core/data/base/CbmDigiData.h
index 45e4274f3a35221831cf2226a413cbbca520c416..d1b8ba5ce27c9c8aa3321f8d4e95ae8d1dc4ec17 100644
--- a/core/data/base/CbmDigiData.h
+++ b/core/data/base/CbmDigiData.h
@@ -90,6 +90,7 @@ public:
       case ECbmModuleId::kTof: return fTof.Size(); break;
       case ECbmModuleId::kPsd: return fPsd.Size(); break;
       case ECbmModuleId::kRich: return fRich.Size(); break;
+      case ECbmModuleId::kFsd: return fFsd.Size(); break;
       default: return 0; break;
     }
   }