diff --git a/src/gerbonara/rs274x.py b/src/gerbonara/rs274x.py
index 6279f9b..5477916 100644
--- a/src/gerbonara/rs274x.py
+++ b/src/gerbonara/rs274x.py
@@ -878,6 +878,10 @@ class GerberParser:
             if match['shape'] in 'RO' and (math.isclose(modifiers[0], 0) or math.isclose(modifiers[1], 0)):
                 self.warn('Definition of zero-width and/or zero-height rectangle or obround aperture. This is invalid according to spec.' )
 
+            # Polygon aperture rotation is specified in degrees, but radians are easier to work with
+            if match['shape'] == 'P':
+                modifiers[2] = math.radians(modifiers[2])
+
             new_aperture = kls(*modifiers, unit=self.file_settings.unit, attrs=tuple(self.aperture_attrs.items()),
                     original_number=number)