diff --git a/CHANGELOG.md b/CHANGELOG.md
index 3ce3c266..f9e7eb4f 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -12,6 +12,7 @@ CHANGELOG for FlatCAM beta
 - some UI changes in the Preferences: the clicked tab now have a distinctive color (green) and some strings are optimized
 - added in CNCJob preferences new preferences that allow compensation for the CNC bed skew/tilt (axes not being square one to another)
 - all pre-processors are altered such they can adjust the gcode to use the compensation values set in Preferences -> CNC-Job section
+- fixed a Gerber parser issue shown by Gerber files generated by Autotrax DEX ECAD software: if the last operation before a region was a flash D03 then at the beginning of the region a flash was added with the previous aperture
 
 8.01.2021
 
diff --git a/appParsers/ParseGerber.py b/appParsers/ParseGerber.py
index 7fd5e098..cb3cd310 100644
--- a/appParsers/ParseGerber.py
+++ b/appParsers/ParseGerber.py
@@ -876,6 +876,9 @@ class Gerber(Geometry):
                         path = [path[-1]]
 
                     making_region = True
+                    # flashes are not allowed inside regions
+                    if current_operation_code == 3:
+                        current_operation_code = 2
                     continue
 
                 # ################################################################
@@ -1068,7 +1071,7 @@ class Gerber(Geometry):
                     if match.group(4) is not None:
                         current_operation_code = int(match.group(4))
 
-                    # Pen down: add segment
+                        # Pen down: add segment
                     if current_operation_code == 1:
                         # if linear_x or linear_y are None, ignore those
                         if current_x is not None and current_y is not None: