diff --git a/CHANGELOG.md b/CHANGELOG.md
index d2a728cd..3d07f369 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -14,6 +14,9 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
   - Now you can nest imports (import from an imported file) (#218)
   - Preflights can be imported (#181)
 
+### Fixed
+- OAR computation (Report)
+
 
 ## [1.2.0] - 2022-06-15
 ### Added
diff --git a/kibot/out_report.py b/kibot/out_report.py
index 39925126..48d2139a 100644
--- a/kibot/out_report.py
+++ b/kibot/out_report.py
@@ -521,7 +521,7 @@ class ReportOptions(BaseOptions):
                 via_id = (via.GetDrill(), via.GetWidth())
                 self._vias[via_id] = self._vias.get(via_id, 0) + 1
                 d = adjust_drill(via_id[0])
-                self.oar_vias = min(self.oar_vias, via_id[1] - d)
+                self.oar_vias = min(self.oar_vias, (via_id[1] - d) / 2)
                 self._drills_real[d] = self._drills_real.get(d, 0) + 1
         self.track_min = min(self.track_d, self.track)
         ###########################################################
@@ -580,8 +580,8 @@ class ReportOptions(BaseOptions):
                     # print('{} @ {}'.format(dr, pad.GetPosition()))
                     self._drills_real[d_r] = self._drills_real.get(d_r, 0) + 1
                 pad_sz = pad.GetSize()
-                oar_x = pad_sz.x - dr_x_real
-                oar_y = pad_sz.y - dr_y_real
+                oar_x = (pad_sz.x - dr_x_real) / 2
+                oar_y = (pad_sz.y - dr_y_real) / 2
                 oar_t = min(oar_x, oar_y)
                 if oar_t > 0:
                     self.oar_pads = min(self.oar_pads, oar_t)
@@ -636,7 +636,7 @@ class ReportOptions(BaseOptions):
             h = v.m_Drill
             if not d and not h:
                 continue  # KiCad 6
-            self.oar_vias_d = min(self.oar_vias_d, d - adjust_drill(h))
+            self.oar_vias_d = min(self.oar_vias_d, (d - adjust_drill(h)) / 2)
             self._vias_defined.add((h, d))
             self._via_sizes_sorted.append((h, d))
         ###########################################################
diff --git a/tests/reference/5_1_6/light_control-report.txt b/tests/reference/5_1_6/light_control-report.txt
index de340131..85f9a55e 100644
--- a/tests/reference/5_1_6/light_control-report.txt
+++ b/tests/reference/5_1_6/light_control-report.txt
@@ -38,11 +38,11 @@ Via: 0.51/0.25 mm (20/10 mils)
 - Micro via: no [0.2/0.1 mm (8/4 mils)]
 - Burried/blind via: no
 
-Outer Annular Ring: 0.16 mm (6 mils)
+Outer Annular Ring: 0.08 mm (3 mils)
 
-- By design rules: 0.16 mm (6 mils)
+- By design rules: 0.08 mm (3 mils)
 
-Eurocircuits class: 6C
+Eurocircuits class: 10C
 
 
 # General stats
diff --git a/tests/reference/5_1_6/light_control-report.txt_2 b/tests/reference/5_1_6/light_control-report.txt_2
index de340131..85f9a55e 100644
--- a/tests/reference/5_1_6/light_control-report.txt_2
+++ b/tests/reference/5_1_6/light_control-report.txt_2
@@ -38,11 +38,11 @@ Via: 0.51/0.25 mm (20/10 mils)
 - Micro via: no [0.2/0.1 mm (8/4 mils)]
 - Burried/blind via: no
 
-Outer Annular Ring: 0.16 mm (6 mils)
+Outer Annular Ring: 0.08 mm (3 mils)
 
-- By design rules: 0.16 mm (6 mils)
+- By design rules: 0.08 mm (3 mils)
 
-Eurocircuits class: 6C
+Eurocircuits class: 10C
 
 
 # General stats
diff --git a/tests/reference/5_1_6/light_control-report_simple.txt b/tests/reference/5_1_6/light_control-report_simple.txt
index d58aa6bc..8ae8acda 100644
--- a/tests/reference/5_1_6/light_control-report_simple.txt
+++ b/tests/reference/5_1_6/light_control-report_simple.txt
@@ -3,7 +3,7 @@ Size:
 
 - 59.69x48.26 mm
 
-Class: 6C
+Class: 10C
 
 Track width: ≥ 0.15 mm
 
@@ -13,7 +13,7 @@ Minimum drill size: ≥ 0.35 mm (finished metalized hole: 0.25 mm)
 
 Minimum slot width: ≥ 0.6 mm
 
-Ring collar: ≥ 0.16 mm
+Ring collar: ≥ 0.08 mm
 
 
 Materials:
diff --git a/tests/reference/6_0_4/light_control-report.txt b/tests/reference/6_0_4/light_control-report.txt
index 5029e518..b0dff466 100644
--- a/tests/reference/6_0_4/light_control-report.txt
+++ b/tests/reference/6_0_4/light_control-report.txt
@@ -63,11 +63,11 @@ Via: 0.51/0.25 mm (20/10 mils)
 - Micro via: no [0.2/0.1 mm (8/4 mils)]
 - Burried/blind via: no
 
-Outer Annular Ring: 0.16 mm (6 mils)
+Outer Annular Ring: 0.08 mm (3 mils)
 
-- By design rules: 0.16 mm (6 mils)
+- By design rules: 0.08 mm (3 mils)
 
-Eurocircuits class: 6C
+Eurocircuits class: 10C
 
 
 # General stats
diff --git a/tests/reference/6_0_4/light_control-report_simple.txt b/tests/reference/6_0_4/light_control-report_simple.txt
index 4f8b4f23..9c88fd56 100644
--- a/tests/reference/6_0_4/light_control-report_simple.txt
+++ b/tests/reference/6_0_4/light_control-report_simple.txt
@@ -3,7 +3,7 @@ Size:
 
 - 59.69x48.26 mm
 
-Class: 6C
+Class: 10C
 
 Track width: ≥ 0.15 mm
 
@@ -13,7 +13,7 @@ Minimum drill size: ≥ 0.35 mm (finished metalized hole: 0.25 mm)
 
 Minimum slot width: ≥ 0.6 mm
 
-Ring collar: ≥ 0.16 mm
+Ring collar: ≥ 0.08 mm
 
 Special features: