diff --git a/DataFormats/Detectors/MUON/MID/include/DataFormatsMID/Track.h b/DataFormats/Detectors/MUON/MID/include/DataFormatsMID/Track.h
index 01c649a1a579a..060538fc91654 100644
--- a/DataFormats/Detectors/MUON/MID/include/DataFormatsMID/Track.h
+++ b/DataFormats/Detectors/MUON/MID/include/DataFormatsMID/Track.h
@@ -188,6 +188,9 @@ class Track
   /// Overload ostream operator for MID track
   friend std::ostream& operator<<(std::ostream& stream, const Track& track);
 
+  /// set efficiency word (public function)
+  void setEfficiencyWord(uint32_t efficiencyWord) { mEfficiencyWord = efficiencyWord; }
+
  private:
   /// Set portions of the efficiency word
   /// \param pos Position in the word