diff --git a/src/dump_header.cpp b/src/dump_header.cpp
index eca6ec01..9242b5b2 100644
--- a/src/dump_header.cpp
+++ b/src/dump_header.cpp
@@ -270,9 +270,14 @@ int dump_header_root(const std::string fileName, const bool summary, const bool
   }
 
   // summary as well?
-  if (summary && (fileType == DH_MUSR_ROOT)) {
+  if (summary && ((fileType == DH_MUSR_ROOT) || (fileType == DH_MUSR_ROOT_DIR))) {
     TObjArray *runSum=nullptr;
-    runSum = static_cast<TObjArray*>(folder->FindObject("RunSummary"));
+
+    if (fileType == DH_MUSR_ROOT) // TFolder
+      runSum = static_cast<TObjArray*>(folder->FindObject("RunSummary"));
+    else // TDirectory
+      f.GetObject("RunHeader/RunSummary", runSum);
+
     if (!runSum) { // something is wrong!!
       std::cerr << std::endl << "**ERROR** Couldn't obtain RunSummary " << fileName << std::endl;
       f.Close();