diff --git a/analysis/common/analysis_tree_converter/steer/CMakeLists.txt b/analysis/common/analysis_tree_converter/steer/CMakeLists.txt
index 185eafc14d3ce794f4cd564b9300e3df32a39257..51ec7976c8760346064fac01ee991ad76f86aa34 100644
--- a/analysis/common/analysis_tree_converter/steer/CMakeLists.txt
+++ b/analysis/common/analysis_tree_converter/steer/CMakeLists.txt
@@ -1,7 +1,7 @@
 # CMakeList file for library libCbmAtcOfflineSteer
 # F. Linz,     27 October 2023
 
-set(SRCS
+set(NO_DICT_SRCS
   Config.cxx
   Run.cxx
   TaskFactory.cxx
@@ -10,7 +10,7 @@ set(SRCS
 set(INCLUDE_DIRECTORIES ${CMAKE_CURRENT_SOURCE_DIR})
 
 set(LIBRARY_NAME CbmAtConverterSteer)
-set(LINKDEF RootLinkDef.h)
+#set(LINKDEF RootLinkDef.h)
 set(PUBLIC_DEPENDENCIES
   CbmData
   FairRoot::Base
diff --git a/analysis/common/analysis_tree_converter/steer/Run.cxx b/analysis/common/analysis_tree_converter/steer/Run.cxx
index fc5e22e44792242b629226d363e96fc33389aa76..ad5e5beb948413b837210f0911a6a6664487042b 100644
--- a/analysis/common/analysis_tree_converter/steer/Run.cxx
+++ b/analysis/common/analysis_tree_converter/steer/Run.cxx
@@ -231,4 +231,4 @@ namespace cbm::atconverter
 
 }  // namespace cbm::atconverter
 
-ClassImp(cbm::atconverter::Run)
+//ClassImp(cbm::atconverter::Run)
diff --git a/analysis/common/analysis_tree_converter/steer/Run.h b/analysis/common/analysis_tree_converter/steer/Run.h
index 1239afe8d15e52360c98cf7ac3e04ceba3c27912..5ae31bea0567f0f9ce868462569a5c417ddcb619 100644
--- a/analysis/common/analysis_tree_converter/steer/Run.h
+++ b/analysis/common/analysis_tree_converter/steer/Run.h
@@ -159,8 +159,7 @@ namespace cbm::atconverter
     Config fConfig                      = {};
     std::set<ECbmModuleId> fDataPresent = {};
 
-
-    ClassDef(cbm::atconverter::Run, 1);
+    // ClassDef(cbm::atconverter::Run, 1);
   };
 
 }  // namespace cbm::atconverter
diff --git a/reco/offline/steer/CMakeLists.txt b/reco/offline/steer/CMakeLists.txt
index 8ada18e7a344e15764870c872bbcb515dfb848b2..84c367589206572f20151d570ddd1db6268be792 100644
--- a/reco/offline/steer/CMakeLists.txt
+++ b/reco/offline/steer/CMakeLists.txt
@@ -2,7 +2,7 @@
 # V. Friese,     13 May 2023
 
 
-set(SRCS
+set(NO_DICT_SRCS
   Config.cxx
   Run.cxx
   TaskFactory.cxx
@@ -16,7 +16,7 @@ endif()
 
 
 set(LIBRARY_NAME CbmRecoOfflineSteer)
-set(LINKDEF RootLinkDef.h)
+#set(LINKDEF RootLinkDef.h)
 set(PUBLIC_DEPENDENCIES
   AlgoOffline
   CbmData
diff --git a/reco/offline/steer/Run.cxx b/reco/offline/steer/Run.cxx
index af0ac760ee739a0119ec4c2d640a1d32d559fec3..209e7d8e13f17f3acb42c7bc0dfa9a5fed1fb68a 100644
--- a/reco/offline/steer/Run.cxx
+++ b/reco/offline/steer/Run.cxx
@@ -240,4 +240,4 @@ namespace cbm::reco::offline
 
 }  // namespace cbm::reco::offline
 
-ClassImp(cbm::reco::offline::Run)
+//ClassImp(cbm::reco::offline::Run)
diff --git a/reco/offline/steer/Run.h b/reco/offline/steer/Run.h
index 9a47c06022f63158dce364a20ee8cf9a6f3f75f9..697e0eb38565a54bece4d31c27c9127fa82b0ee2 100644
--- a/reco/offline/steer/Run.h
+++ b/reco/offline/steer/Run.h
@@ -152,7 +152,7 @@ namespace cbm::reco::offline
     std::set<ECbmModuleId> fDataPresent = {};
 
 
-    ClassDef(cbm::reco::offline::Run, 1);
+    // ClassDef(cbm::reco::offline::Run, 1);
   };
 
 }  // namespace cbm::reco::offline
diff --git a/sim/response/steer/CMakeLists.txt b/sim/response/steer/CMakeLists.txt
index 250a00737552303b8b4753377d38b2182a0fdff3..df73c871ceacc6882a537e8c9c154854353d1df7 100644
--- a/sim/response/steer/CMakeLists.txt
+++ b/sim/response/steer/CMakeLists.txt
@@ -1,7 +1,7 @@
 # CMakeList file for library libCbmSimDigitizationSteer
 # F. Linz,     09 January 2024
 
-set(SRCS
+set(NO_DICT_SRCS
   Config.cxx
   Run.cxx
   )
@@ -9,7 +9,7 @@ set(SRCS
 set(INCLUDE_DIRECTORIES ${CMAKE_CURRENT_SOURCE_DIR})
 
 set(LIBRARY_NAME CbmSimDigitizationSteer)
-set(LINKDEF RootLinkDef.h)
+#set(LINKDEF RootLinkDef.h)
 set(PUBLIC_DEPENDENCIES
   CbmData
   FairRoot::Base
diff --git a/sim/response/steer/Run.cxx b/sim/response/steer/Run.cxx
index 1e76e6be65651bbdb4696cdb08fb4df7de3208f9..a44db7c19bc00b4a3c5ccad63147254094369cfa 100644
--- a/sim/response/steer/Run.cxx
+++ b/sim/response/steer/Run.cxx
@@ -176,4 +176,4 @@ namespace cbm::sim::digitization
 
 }  // namespace cbm::sim::digitization
 
-ClassImp(cbm::sim::digitization::Run)
+//ClassImp(cbm::sim::digitization::Run)
diff --git a/sim/response/steer/Run.h b/sim/response/steer/Run.h
index 08ff0a60ec1e3203c7fc664845bfa5b820494c72..053a3c5cfa768add887cef752e675c8d0d29b9a2 100644
--- a/sim/response/steer/Run.h
+++ b/sim/response/steer/Run.h
@@ -122,7 +122,7 @@ namespace cbm::sim::digitization
     Config fConfig = {};
 
 
-    ClassDef(cbm::sim::digitization::Run, 1);
+    // ClassDef(cbm::sim::digitization::Run, 1);
   };
 
 }  // namespace cbm::sim::digitization