diff --git a/src/dump.cpp b/src/dump.cpp
index 44098298ba..ddd958c25c 100644
--- a/src/dump.cpp
+++ b/src/dump.cpp
@@ -238,7 +238,7 @@ void Dump::init()
     int gcmcflag = 0;
     for (int i = 0; i < modify->nfix; i++)
       if ((strcmp(modify->fix[i]->style,"gcmc") == 0))
-	gcmcflag = 1;
+        gcmcflag = 1;
 
     if (sortcol == 0 && atom->tag_consecutive() && !gcmcflag) {
       tagint *tag = atom->tag;
@@ -898,7 +898,7 @@ void Dump::modify_params(int narg, char **arg)
     } else if (strcmp(arg[iarg],"fileper") == 0) {
       if (iarg+2 > narg) error->all(FLERR,"Illegal dump_modify command");
       if (!multiproc)
-	error->all(FLERR,"Cannot use dump_modify fileper "
+        error->all(FLERR,"Cannot use dump_modify fileper "
                    "without % in dump file name");
       int nper = force->inumeric(FLERR,arg[iarg+1]);
       if (nper <= 0) error->all(FLERR,"Illegal dump_modify command");
@@ -973,7 +973,7 @@ void Dump::modify_params(int narg, char **arg)
     } else if (strcmp(arg[iarg],"nfile") == 0) {
       if (iarg+2 > narg) error->all(FLERR,"Illegal dump_modify command");
       if (!multiproc)
-	error->all(FLERR,"Cannot use dump_modify nfile "
+        error->all(FLERR,"Cannot use dump_modify nfile "
                    "without % in dump file name");
       int nfile = force->inumeric(FLERR,arg[iarg+1]);
       if (nfile <= 0) error->all(FLERR,"Illegal dump_modify command");
diff --git a/src/modify.cpp b/src/modify.cpp
index 4516788aa9..f723eb38fa 100644
--- a/src/modify.cpp
+++ b/src/modify.cpp
@@ -863,9 +863,9 @@ void Modify::add_fix(int narg, char **arg, int trysuffix)
       fix[ifix]->restart(state_restart_global[i]);
       used_restart_global[i] = 1;
       if (comm->me == 0) {
-	if (screen) 
+        if (screen)
           fprintf(screen,"Resetting global fix info from restart file:\n");
-	if (logfile) 
+        if (logfile)
           fprintf(logfile,"Resetting global fix info from restart file:\n");
         if (screen) fprintf(screen,"  fix style: %s, fix ID: %s\n",
                             fix[ifix]->style,fix[ifix]->id);
@@ -885,9 +885,9 @@ void Modify::add_fix(int narg, char **arg, int trysuffix)
         fix[ifix]->unpack_restart(j,index_restart_peratom[i]);
       fix[ifix]->restart_reset = 1;
       if (comm->me == 0) {
-	if (screen) 
+        if (screen)
           fprintf(screen,"Resetting peratom fix info from restart file:\n");
-	if (logfile) 
+        if (logfile)
           fprintf(logfile,"Resetting peratom fix info from restart file:\n");
         if (screen) fprintf(screen,"  fix style: %s, fix ID: %s\n",
                             fix[ifix]->style,fix[ifix]->id);
@@ -1409,24 +1409,24 @@ void Modify::restart_deallocate(int flag)
     if (flag && comm->me == 0) {
       int i;
       for (i = 0; i < nfix_restart_global; i++)
-	if (used_restart_global[i] == 0) break;
+        if (used_restart_global[i] == 0) break;
       if (i == nfix_restart_global) {
-	if (screen) 
+        if (screen)
           fprintf(screen,"All restart file global fix info "
                   "was re-assigned\n");
-	if (logfile) 
+        if (logfile)
           fprintf(logfile,"All restart file global fix info "
                   "was re-assigned\n");
       } else {
-	if (screen) fprintf(screen,"Unused restart file global fix info:\n");
-	if (logfile) fprintf(logfile,"Unused restart file global fix info:\n");
-	for (i = 0; i < nfix_restart_global; i++) {
-	  if (used_restart_global[i]) continue;
-	  if (screen) fprintf(screen,"  fix style: %s, fix ID: %s\n",
-			      style_restart_global[i],id_restart_global[i]);
-	  if (logfile) fprintf(logfile,"  fix style: %s, fix ID: %s\n",
-			       style_restart_global[i],id_restart_global[i]);
-	}
+        if (screen) fprintf(screen,"Unused restart file global fix info:\n");
+        if (logfile) fprintf(logfile,"Unused restart file global fix info:\n");
+        for (i = 0; i < nfix_restart_global; i++) {
+          if (used_restart_global[i]) continue;
+          if (screen) fprintf(screen,"  fix style: %s, fix ID: %s\n",
+                              style_restart_global[i],id_restart_global[i]);
+          if (logfile) fprintf(logfile,"  fix style: %s, fix ID: %s\n",
+                               style_restart_global[i],id_restart_global[i]);
+        }
       }
     }
 
@@ -1445,24 +1445,24 @@ void Modify::restart_deallocate(int flag)
     if (flag && comm->me == 0) {
       int i;
       for (i = 0; i < nfix_restart_peratom; i++)
-	if (used_restart_peratom[i] == 0) break;
+        if (used_restart_peratom[i] == 0) break;
       if (i == nfix_restart_peratom) {
-	if (screen) 
+        if (screen)
           fprintf(screen,"All restart file peratom fix info "
                   "was re-assigned\n");
-	if (logfile) 
+        if (logfile)
           fprintf(logfile,"All restart file peratom fix info "
                   "was re-assigned\n");
       } else {
-	if (screen) fprintf(screen,"Unused restart file peratom fix info:\n");
-	if (logfile) fprintf(logfile,"Unused restart file peratom fix info:\n");
-	for (i = 0; i < nfix_restart_peratom; i++) {
-	  if (used_restart_peratom[i]) continue;
-	  if (screen) fprintf(screen,"  fix style: %s, fix ID: %s\n",
-			      style_restart_peratom[i],id_restart_peratom[i]);
-	  if (logfile) fprintf(logfile,"  fix style: %s, fix ID: %s\n",
-			       style_restart_peratom[i],id_restart_peratom[i]);
-	}
+        if (screen) fprintf(screen,"Unused restart file peratom fix info:\n");
+        if (logfile) fprintf(logfile,"Unused restart file peratom fix info:\n");
+        for (i = 0; i < nfix_restart_peratom; i++) {
+          if (used_restart_peratom[i]) continue;
+          if (screen) fprintf(screen,"  fix style: %s, fix ID: %s\n",
+                              style_restart_peratom[i],id_restart_peratom[i]);
+          if (logfile) fprintf(logfile,"  fix style: %s, fix ID: %s\n",
+                               style_restart_peratom[i],id_restart_peratom[i]);
+        }
       }
     }