diff --git a/cmake/jana_plugin.cmake b/cmake/jana_plugin.cmake
index c9fcf98b4a..5e0baa0a34 100644
--- a/cmake/jana_plugin.cmake
+++ b/cmake/jana_plugin.cmake
@@ -248,6 +248,12 @@ macro(plugin_add_acts _name)
         ActsPluginDD4hep
         ${ActsCore_PATH}/${CMAKE_SHARED_LIBRARY_PREFIX}ActsExamplesFramework${CMAKE_SHARED_LIBRARY_SUFFIX}
     )
+    if(${_name}_WITH_LIBRARY)
+        target_compile_definitions(${PLUGIN_NAME}_library PRIVATE "Acts_VERSION_MAJOR=${Acts_VERSION_MAJOR}")
+    endif()
+    if(${_name}_WITH_PLUGIN)
+        target_compile_definitions(${PLUGIN_NAME}_plugin PRIVATE "Acts_VERSION_MAJOR=${Acts_VERSION_MAJOR}")
+    endif()
 
 endmacro()
 
diff --git a/src/algorithms/tracking/IterativeVertexFinder.cc b/src/algorithms/tracking/IterativeVertexFinder.cc
index ff1c89625b..8ec8876642 100644
--- a/src/algorithms/tracking/IterativeVertexFinder.cc
+++ b/src/algorithms/tracking/IterativeVertexFinder.cc
@@ -86,11 +86,15 @@ std::unique_ptr<edm4eic::VertexCollection> eicrecon::IterativeVertexFinder::prod
   VertexSeeder::Config seederCfg(ipEst);
   VertexSeeder seeder(seederCfg);
   // Set up the actual vertex finder
-  VertexFinder::Config finderCfg(vertexFitter, std::move(linearizer),
-                                 std::move(seeder), ipEst);
+  VertexFinder::Config finderCfg(std::move(vertexFitter), std::move(linearizer),
+                                 std::move(seeder), std::move(ipEst));
   finderCfg.maxVertices                 = m_cfg.m_maxVertices;
   finderCfg.reassignTracksAfterFirstFit = m_cfg.m_reassignTracksAfterFirstFit;
+  #if Acts_VERSION_MAJOR >= 31
+  VertexFinder finder(std::move(finderCfg));
+  #else
   VertexFinder finder(finderCfg);
+  #endif
   VertexFinder::State state(*m_BField, m_fieldctx);
   VertexFinderOptions finderOpts(m_geoctx, m_fieldctx);