diff --git a/PWGEM/Dilepton/Core/DileptonMC.h b/PWGEM/Dilepton/Core/DileptonMC.h
index 7bd6ea4db40..1583373553d 100644
--- a/PWGEM/Dilepton/Core/DileptonMC.h
+++ b/PWGEM/Dilepton/Core/DileptonMC.h
@@ -326,7 +326,7 @@ struct DileptonMC {
     const AxisSpec axis_y{ConfYllBins, pair_y_axis_title};
     const AxisSpec axis_dca{ConfDCAllBins, pair_dca_axis_title};
     const AxisSpec axis_pt_meson{ConfPtllBins, "p_{T} (GeV/c)"}; // for omega, phi meson pT spectra
-    const AxisSpec axis_y_meson{ConfYllBins, "y"};      // rapidity of meson
+    const AxisSpec axis_y_meson{ConfYllBins, "y"};               // rapidity of meson
 
     const AxisSpec axis_dphi_ee{cfg_nbin_dphi_ee, -M_PI / 2., 3. / 2. * M_PI, "#Delta#varphi = #varphi_{l1} - #varphi_{l2} (rad.)"}; // for kHFll
     const AxisSpec axis_deta_ee{cfg_nbin_deta_ee, -2., 2., "#Delta#eta = #eta_{l1} - #eta_{l2}"};                                    // for kHFll