diff --git a/README.md b/README.md
index 4bba0199..d16f0015 100644
--- a/README.md
+++ b/README.md
@@ -15,6 +15,7 @@ CAD program, and create G-Code for Isolation routing.
 - Gerber Editor: a disabled/enabled sequence for the VisPy cursor on Gerber edit make the graphics better
 - Editors: activated an old function that was no longer active: each tool can have it's own set of shortcut keys, the Editor general shortcut keys that are letters are overridden
 - Gerber and Geometry editors, when using the Backspace keys for certain tools, they will backtrack one point but now the utility geometry is immediately updated
+- In Geometry Editor I fixed bug in Arc modes. Arc mode shortcut key is now key 'M' and arc direction change shortcut key is 'D'
 
 13.04.2019
 
diff --git a/camlib.py b/camlib.py
index b3dffb83..20f88c89 100644
--- a/camlib.py
+++ b/camlib.py
@@ -7589,7 +7589,7 @@ def three_point_circle(p1, p2, p3):
     center = a1 + b1 * T[0]
 
     # Radius
-    radius = norm(center - p1)
+    radius = np.linalg.norm(center - p1)
 
     return center, radius, T[0]
 
diff --git a/flatcamEditors/FlatCAMGeoEditor.py b/flatcamEditors/FlatCAMGeoEditor.py
index 987c22a9..46ffc961 100644
--- a/flatcamEditors/FlatCAMGeoEditor.py
+++ b/flatcamEditors/FlatCAMGeoEditor.py
@@ -22,6 +22,7 @@ from shapely.ops import cascaded_union
 import shapely.affinity as affinity
 
 from numpy import arctan2, Inf, array, sqrt, sign, dot
+from numpy.linalg import norm
 
 from rtree import index as rtindex
 from flatcamGUI.GUIElements import OptionalInputSection, FCCheckBox, FCEntry, FCComboBox, FCTextAreaRich, \
@@ -1989,11 +1990,21 @@ class FCArc(FCShapeTool):
         self.points.append(point)
 
         if len(self.points) == 1:
-            self.draw_app.app.inform.emit(_("Click on Start arc point ..."))
+            if self.mode == 'c12':
+                self.draw_app.app.inform.emit(_("Click on Start point ..."))
+            elif self.mode == '132':
+                self.draw_app.app.inform.emit(_("Click on Point3 ..."))
+            else:
+                self.draw_app.app.inform.emit(_("Click on Stop point to complete ..."))
             return "Click on 1st point ..."
 
         if len(self.points) == 2:
-            self.draw_app.app.inform.emit(_("Click on End arc point to complete ..."))
+            if self.mode == 'c12':
+                self.draw_app.app.inform.emit(_("Click on Stop point to complete ..."))
+            elif self.mode == '132':
+                self.draw_app.app.inform.emit(_("Click on Point2 ..."))
+            else:
+                self.draw_app.app.inform.emit(_("Click on Center point to complete ..."))
             return "Click on 2nd point to complete ..."
 
         if len(self.points) == 3:
@@ -2010,11 +2021,13 @@ class FCArc(FCShapeTool):
         if key == 'M' or key == QtCore.Qt.Key_M:
             if self.mode == 'c12':
                 self.mode = '12c'
+                return _('Mode: Start -> Stop -> Center. Click on Start point ...')
             elif self.mode == '12c':
                 self.mode = '132'
+                return _('Mode: Point1 -> Point3 -> Point2. Click on 1st point ...')
             else:
                 self.mode = 'c12'
-            return _('Mode: %s') % self.mode
+                return _('Mode: Center -> Start -> Stop. Click on Center ...')
 
     def utility_geometry(self, data=None):
         if len(self.points) == 1:  # Show the radius