diff --git a/src/blenderbim/blenderbim/bim/module/drawing/decoration.py b/src/blenderbim/blenderbim/bim/module/drawing/decoration.py
index a2195bdb7d..3edc255980 100644
--- a/src/blenderbim/blenderbim/bim/module/drawing/decoration.py
+++ b/src/blenderbim/blenderbim/bim/module/drawing/decoration.py
@@ -801,7 +801,7 @@ class AngleDecorator(BaseDecorator):
                 angle_rad = acos(cos_a)
                 angle = angle_rad / pi * 180
             except ZeroDivisionError:
-                angle = 0
+                angle_rad, angle = 0, 0
 
             # calculate angle position
             p0, p1, p2 = [location_3d_to_region_2d(region, region3d, p) for p in vertices[i0 : i1 + 2]]