diff --git a/CHANGELOG.md b/CHANGELOG.md
index 766a80fd..37312b54 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -7,6 +7,10 @@ CHANGELOG for FlatCAM beta
 
 =================================================
 
+19.09.2020
+
+- removed some brackets in the GRBL laser preprocessor due of GRBL firmware interpreting the first closing bracket as the comment end
+
 3.09.2020
 
 - in CNCJob UI Autolevelling: changed the UI a bit
diff --git a/preprocessors/GRBL_laser.py b/preprocessors/GRBL_laser.py
index 62797122..d85b21fd 100644
--- a/preprocessors/GRBL_laser.py
+++ b/preprocessors/GRBL_laser.py
@@ -43,7 +43,7 @@ class GRBL_laser(PreProc):
         gcode += '(X range: ' + '{: >9s}'.format(xmin) + ' ... ' + '{: >9s}'.format(xmax) + ' ' + units + ')\n'
         gcode += '(Y range: ' + '{: >9s}'.format(ymin) + ' ... ' + '{: >9s}'.format(ymax) + ' ' + units + ')\n\n'
 
-        gcode += '(Laser Power (Spindle Speed): ' + str(p['spindlespeed']) + ')\n\n'
+        gcode += '(Laser Power - Spindle Speed: ' + str(p['spindlespeed']) + ')\n\n'
 
         gcode += ('G20' if p.units.upper() == 'IN' else 'G21') + "\n"
         gcode += 'G90\n'