diff --git a/src/OutputFileHandler.cc b/src/OutputFileHandler.cc
index 93717bbb42bd42813747aead2df1686c442528f6..2e82cdd99877e693df04079ed4ecaf4a5cd5b608 100644
--- a/src/OutputFileHandler.cc
+++ b/src/OutputFileHandler.cc
@@ -208,11 +208,11 @@ void OutputFileHandler::write_EoLS_file(uint32_t ls) {
   EoLS_file.open(full_filename.c_str(), std::ios_base::out);
 
   // TODO: To me it looks like there are more fields than intended in this file...
-  EoLS_file_string_stream << "{\n  \"data\":[\"" << ls_NOrbits_ << "\",\""  // NEvents
-                          << 1 + max_index_per_ls_ << "\",\""               // NFiles
-                          << constants::N_orbits_per_lumisection << "\","   // Total Events
-                          << "\"0\",\""                                     // NLost Events
-                          << ls_file_size_ << "\"],\n  \"definition\":\""   // NBytes
+  EoLS_file_string_stream << "{\n  \"data\":[\"" << ls_NOrbits_ << "\",\""                // NEvents
+                          << 1 + max_index_per_ls_ << "\",\""                             // NFiles
+                          << constants::N_orbits_per_lumisection << "\",\""               // Total Events
+                          << constants::N_orbits_per_lumisection - ls_NOrbits_ << "\",\"" // NLost Events
+                          << ls_file_size_ << "\"],\n  \"definition\":\""                 // NBytes
                           << "/fff/ramdisk/run" << std::setfill('0') << std::setw(6)
                           << current_run_number_ << "/jsd/EoLS.jsd\",\n  \"source\":\"l1scout\"\n}";
 
@@ -245,4 +245,4 @@ void OutputFileHandler::write_EoR_file() {
                          << current_run_number_ << "/jsd/EoR.jsd\",\n  \"source\":\"l1scout\"\n}";
   EoR_file << EoR_file_string_stream.str();
   EoR_file.close();
-}
\ No newline at end of file
+}