diff --git a/ACTSTracking/ACTSProcBase.hxx b/ACTSTracking/ACTSProcBase.hxx
index ad939c2..39f81c7 100644
--- a/ACTSTracking/ACTSProcBase.hxx
+++ b/ACTSTracking/ACTSProcBase.hxx
@@ -63,6 +63,9 @@ class ACTSProcBase : public marlin::Processor {
   //! Path to tracker geometry file
   std::string _tgeoFile{};
 
+  //! Path to tracker geometry configuration
+  std::string _tgeoJson{};
+
   std::shared_ptr<ACTSTracking::GeometryIdMappingTool> geoIDMappingTool() const;
 
   const Acts::MagneticFieldContext& magneticFieldContext() const;
diff --git a/src/ACTSProcBase.cxx b/src/ACTSProcBase.cxx
index 0cba549..df368b2 100644
--- a/src/ACTSProcBase.cxx
+++ b/src/ACTSProcBase.cxx
@@ -33,6 +33,8 @@ ACTSProcBase::ACTSProcBase(const std::string& procname) : Processor(procname) {
       _matFile, std::string(""));
   registerProcessorParameter("TGeoFile", "Path to the tracker geometry file.",
                              _tgeoFile, std::string(""));
+  registerProcessorParameter("TGeoJson", "Path to the tracker geometry configuration.",
+                             _tgeoJson, std::string(""));
 }
 
 std::shared_ptr<GeometryIdMappingTool> ACTSProcBase::geoIDMappingTool() const {