diff --git a/src/Mod/Path/PathScripts/opensbp_pre.py b/src/Mod/Path/PathScripts/opensbp_pre.py
index e9bca9816117..90404f58e9df 100644
--- a/src/Mod/Path/PathScripts/opensbp_pre.py
+++ b/src/Mod/Path/PathScripts/opensbp_pre.py
@@ -1,26 +1,25 @@
-#***************************************************************************
-#*   (c) sliptonic (shopinthewoods<at>gmail.com) 2014                        *
-#*                                                                         *
-#*   This file is part of the FreeCAD CAx development system.              *
-#*                                                                         *
-#*   This program is free software; you can redistribute it and/or modify  *
-#*   it under the terms of the GNU Lesser General Public License (LGPL)    *
-#*   as published by the Free Software Foundation; either version 2 of     *
-#*   the License, or (at your option) any later version.                   *
-#*   for detail see the LICENCE text file.                                 *
-#*                                                                         *
-#*   FreeCAD 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 Lesser General Public License for more details.                   *
-#*                                                                         *
-#*   You should have received a copy of the GNU Library General Public     *
-#*   License along with FreeCAD; if not, write to the Free Software        *
-#*   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  *
-#*   USA                                                                   *
-#*                                                                         *
-#***************************************************************************/
-
+# ***************************************************************************
+# *   (c) sliptonic (shopinthewoods<at>gmail.com) 2014                      *
+# *                                                                         *
+# *   This file is part of the FreeCAD CAx development system.              *
+# *                                                                         *
+# *   This program is free software; you can redistribute it and/or modify  *
+# *   it under the terms of the GNU Lesser General Public License (LGPL)    *
+# *   as published by the Free Software Foundation; either version 2 of     *
+# *   the License, or (at your option) any later version.                   *
+# *   for detail see the LICENCE text file.                                 *
+# *                                                                         *
+# *   FreeCAD 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 Lesser General Public License for more details.                   *
+# *                                                                         *
+# *   You should have received a copy of the GNU Library General Public     *
+# *   License along with FreeCAD; if not, write to the Free Software        *
+# *   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  *
+# *   USA                                                                   *
+# *                                                                         *
+# ***************************************************************************/
 
 '''
 This is a preprocessor file for the Path workbench. Its aim is to
@@ -84,7 +83,6 @@ def insert(filename,docname):
 def parse(inputstring):
     "parse(inputstring): returns a list of parsed output string"
     print "preprocessing..."
-    
     # split the input by line
     lines = inputstring.split("\n")
     return_output = []
@@ -95,6 +93,7 @@ def parse(inputstring):
     movecommand = ['G1', 'G0', 'G02', 'G03']
 
     for l in lines:
+        print l
         # remove any leftover trailing and preceding spaces
         l = l.strip()
         if not l:
@@ -142,7 +141,7 @@ def parse(inputstring):
                     speed = lastfeedspeed["XY"]
                 else:
                     speed = lastfeedspeed[words[0][1]]
-            
+
 
             last[words[0][1]] = words[1]
             output += s + words[0][1] + str(words[1])  + " F" + speed + "\n"
@@ -171,11 +170,11 @@ def parse(inputstring):
             continue
 
         if words[0] in ["TR"]: #Setting spindle speed
-            if  int(words[1]) < 0:
+            if  float(words[1]) < 0:
                 s = "M4 S"
             else:
                 s = "M3 S"
-            s += str(abs(int(words[1])))
+            s += str(abs(float(words[1])))
             output += s + '\n'
 
         if words[0] in ["CG"]: #Gcode circle/arc