diff --git a/src/FffGcodeWriter.cpp b/src/FffGcodeWriter.cpp
index db67d01f72..46c1a8ec70 100644
--- a/src/FffGcodeWriter.cpp
+++ b/src/FffGcodeWriter.cpp
@@ -2675,34 +2675,27 @@ bool FffGcodeWriter::processInsets(
         }
 
         const AngleDegrees overhang_angle = mesh.settings.get<AngleDegrees>("wall_overhang_angle");
-        if (overhang_angle >= 90)
-        {
-            // clear to disable overhang detection
-            gcode_layer.setOverhangMask(Shape());
-        }
-        else
+        Shape overhang_region; // keep empty to disable overhang detection
+        if (overhang_angle < 90)
         {
             // the overhang mask is set to the area of the current part's outline minus the region that is considered to be supported
             // the supported region is made up of those areas that really are supported by either model or support on the layer below
             // expanded to take into account the overhang angle, the greater the overhang angle, the larger the supported area is
             // considered to be
             const coord_t overhang_width = layer_height * std::tan(overhang_angle / (180 / std::numbers::pi));
-            Shape overhang_region = part.outline.offset(-half_outer_wall_width).difference(outlines_below.offset(10 + overhang_width - half_outer_wall_width)).offset(10);
-            gcode_layer.setOverhangMask(overhang_region);
+            overhang_region = part.outline.offset(-half_outer_wall_width).difference(outlines_below.offset(10 + overhang_width - half_outer_wall_width)).offset(10);
         }
+        gcode_layer.setOverhangMask(overhang_region);
 
         // As above, but for the seam overhang mask instead of the wall one.
         const AngleDegrees seam_overhang_angle = mesh.settings.get<AngleDegrees>("seam_overhang_angle");
-        if (seam_overhang_angle >= 90)
-        {
-            gcode_layer.setSeamOverhangMask(Shape());
-        }
-        else
+        Shape seam_overhang_region; // keep empty to disable overhang detection w.r.t. seams
+        if (seam_overhang_angle < 90)
         {
             const coord_t overhang_width = layer_height * std::tan(seam_overhang_angle / (180 / std::numbers::pi));
-            Shape overhang_region = part.outline.offset(-half_outer_wall_width).difference(outlines_below.offset(10 + overhang_width - half_outer_wall_width)).offset(10);
-            gcode_layer.setSeamOverhangMask(overhang_region);
+            seam_overhang_region = part.outline.offset(-half_outer_wall_width).difference(outlines_below.offset(10 + overhang_width - half_outer_wall_width)).offset(10);
         }
+        gcode_layer.setSeamOverhangMask(seam_overhang_region);
 
         const auto roofing_mask_fn = [&]() -> Shape
         {