diff --git a/src/LEPTON/fix_epot_lepton.h b/src/LEPTON/fix_epot_lepton.h
index e730e267ed..d4f12915fa 100644
--- a/src/LEPTON/fix_epot_lepton.h
+++ b/src/LEPTON/fix_epot_lepton.h
@@ -52,7 +52,7 @@ class FixEpotLepton : public Fix {
 
   int force_flag;
   double h = -1.0;
-  double qe2f, mue2e; 
+  double qe2f, mue2e;
   double fsum[4], fsum_all[4];
 };
 }    // namespace LAMMPS_NS