diff --git a/sensors/offline/FileReader.h b/sensors/offline/FileReader.h
index 6a7e90d..16b06ad 100644
--- a/sensors/offline/FileReader.h
+++ b/sensors/offline/FileReader.h
@@ -385,6 +385,8 @@ namespace Offline {
 			TS<int> elem(ts, std::stoi(gtIndex));
 			groundTruth.push_back(elem);
 
+            entries.push_back(Entry(Sensor::GROUND_TRUTH, ts, groundTruth.size() - 1));
+
 		}
 
         void parseActivity(const uint64_t ts, const std::string& data) {