diff --git a/FlatCAMObj.py b/FlatCAMObj.py
index 76ac037e..cd7be03f 100644
--- a/FlatCAMObj.py
+++ b/FlatCAMObj.py
@@ -411,9 +411,13 @@ class FlatCAMGerber(FlatCAMObj, Gerber):
                         except:
                             log.warning("Failed to copy option.", option)
 
-                for geos in grb.solid_geometry:
-                    grb_final.solid_geometry.append(geos)
-                    grb_final.follow_geometry.append(geos)
+                try:
+                    for geos in grb.solid_geometry:
+                        grb_final.solid_geometry.append(geos)
+                        grb_final.follow_geometry.append(geos)
+                except TypeError:
+                    grb_final.solid_geometry.append(grb.solid_geometry)
+                    grb_final.follow_geometry.append(grb.solid_geometry)
 
                 for ap in grb.apertures:
                     if ap not in grb_final.apertures:
diff --git a/README.md b/README.md
index 1f0529f0..d4d5adb5 100644
--- a/README.md
+++ b/README.md
@@ -12,6 +12,7 @@ CAD program, and create G-Code for Isolation routing.
 19.03.2019
 
 - added autocomplete for Code editor; TODO: needs to be enabled only when doing Scripts, right now is available for everyone.
+- fixed the Gerber.merge() to work for the case when one of the merged Gerber objects solid_geometry type is Polygon and not a list
 
 18.03.2019