diff --git a/src/dump_header.cpp b/src/dump_header.cpp
index abc99ca28..7561ca751 100644
--- a/src/dump_header.cpp
+++ b/src/dump_header.cpp
@@ -56,6 +56,7 @@
 #include <TString.h>
 #include <TFolder.h>
 #include <TH1F.h>
+#include <TKey.h>
 
 #ifdef HAVE_GIT_REV_H
 #include "git-revision.h"
@@ -273,13 +274,14 @@ int dump_header_root(const std::string fileName, const bool summary, const bool
   // summary as well?
   if (summary && ((fileType == DH_MUSR_ROOT) || (fileType == DH_MUSR_ROOT_DIR))) {
     TObjArray *runSum=nullptr;
+    TDirectoryFile *runSumDir=nullptr;
 
     if (fileType == DH_MUSR_ROOT) // TFolder
       runSum = static_cast<TObjArray*>(folder->FindObject("RunSummary"));
     else // TDirectory
-      f.GetObject("RunHeader/RunSummary", runSum);
+      f.GetObject("RunHeader/RunSummary", runSumDir);
 
-    if (!runSum) { // something is wrong!!
+    if (!runSum && !runSumDir) { // something is wrong!!
       std::cerr << std::endl << "**ERROR** Couldn't obtain RunSummary " << fileName << std::endl;
       f.Close();
       return 1;
@@ -289,12 +291,26 @@ int dump_header_root(const std::string fileName, const bool summary, const bool
     std::cout << "++++++++++++++++++++" << std::endl;
     TObjString *tstr;
     TString str;
-    for (Int_t i=0; i<runSum->GetEntries(); i++) {
-      tstr = static_cast<TObjString*>(runSum->At(i));
-      str = tstr->String();
-      std::cout << str;
-      if (!str.Contains("\r") && !str.Contains("\n"))
-        std::cout << std::endl;
+    if (runSum) {
+      for (Int_t i=0; i<runSum->GetEntries(); i++) {
+        tstr = static_cast<TObjString*>(runSum->At(i));
+        str = tstr->String();
+        std::cout << str;
+        if (!str.Contains("\r") && !str.Contains("\n"))
+          std::cout << std::endl;
+      }
+    } else if (runSumDir) {
+      TIter next(runSumDir->GetListOfKeys());
+      TKey *key;
+      while ((key = (TKey*)next())) {
+        if (TString(key->GetClassName()) == "TObjString") {
+          tstr = dynamic_cast<TObjString*>(key->ReadObj());
+          str = tstr->String();
+          std::cout << str;
+          if (!str.Contains("\r") && !str.Contains("\n"))
+            std::cout << std::endl;
+        }
+      }
     }
   }