diff --git a/common/preview_items/preview_utils.cpp b/common/preview_items/preview_utils.cpp
index c3ff419c18..b11d64168c 100644
--- a/common/preview_items/preview_utils.cpp
+++ b/common/preview_items/preview_utils.cpp
@@ -1,24 +1,20 @@
 /*
  * This program source code file is part of KICAD, a free EDA CAD application.
  *
- * Copyright (C) 2017 Kicad Developers, see change_log.txt for contributors.
+ * Copyright (C) 2019 Kicad Developers, see AUTHORS.txt for contributors.
  *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
+ * This program is free software: you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation, either version 3 of the License, or (at your
+ * option) any later version.
  *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * General Public License for more details.
  *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, you may find one here:
- * http://www.gnu.org/licenses/old-licenses/gpl-2.0.html
- * or you may search the http://www.gnu.org website for the version 2 license,
- * or you may write to the Free Software Foundation, Inc.,
- * 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA
+ * You should have received a copy of the GNU General Public License along
+ * with this program.  If not, see <http://www.gnu.org/licenses/>.
  */
 
 #include <preview_items/preview_utils.h>
@@ -42,7 +38,7 @@ static wxString formatPreviewDimension( double aVal, EDA_UNITS_T aUnits )
     switch( aUnits )
     {
     case MILLIMETRES:
-        precision = 2;  // 10um
+        precision = 3;  // 1um
         break;
 
     case INCHES: