diff --git a/metadata.json b/metadata.json
index c6dd490..53828cc 100644
--- a/metadata.json
+++ b/metadata.json
@@ -29,7 +29,7 @@
     ],
     "versions": [
         {
-            "version": "0.3.1",
+            "version": "0.3.2",
             "status": "testing",
             "kicad_version": "6.00"
         }
diff --git a/plugins/thread.py b/plugins/thread.py
index 79686f6..3643000 100644
--- a/plugins/thread.py
+++ b/plugins/thread.py
@@ -127,7 +127,7 @@ def run(self):
                     footprint_designators[footprint.GetReference()] -= 1
 
                 components.append({
-                    'Designator': "{}_{}".format(footprint.GetReference(), unique_id),
+                    'Designator': "{}{}{}".format(footprint.GetReference(), "" if unique_id == "" else "_", unique_id),
                     'Mid X': (footprint.GetPosition()[0] - board.GetDesignSettings().GetAuxOrigin()[0]) / 1000000.0,
                     'Mid Y': (footprint.GetPosition()[1] - board.GetDesignSettings().GetAuxOrigin()[1]) * -1.0 / 1000000.0,
                     'Rotation': footprint.GetOrientation() / 10.0,
@@ -144,7 +144,7 @@ def run(self):
                 # todo: merge similar parts into single entry
 
                 bom.append({
-                    'Designator': "{}_{}".format(footprint.GetReference(), unique_id),
+                    'Designator': "{}{}{}".format(footprint.GetReference(), "" if unique_id == "" else "_", unique_id),
                     'Footprint': footprint_name,
                     'Quantity': 1,
                     'Value': footprint.GetValue(),