diff --git a/README.rst b/README.rst
index d39b8f6..b4eeedf 100644
--- a/README.rst
+++ b/README.rst
@@ -126,6 +126,8 @@ Changelog
 ---------
 Beacontools follows the `semantic versioning <https://semver.org/>`__ scheme.
 
+* 2.0.1
+    * Removed (unused) rfu field from the Eddystone UID packet, fixes #39
 * 2.0.0
     * Dropped support for Python 2.7 and 3.4
     * Added support for COVID-19 Exposure Notifications
diff --git a/beacontools/device_filters.py b/beacontools/device_filters.py
index c67fb91..5b9d7f6 100644
--- a/beacontools/device_filters.py
+++ b/beacontools/device_filters.py
@@ -35,7 +35,7 @@ class CJMonitorFilter(DeviceFilter):
 
     def __init__(self, company_id=CJ_MANUFACTURER_ID, beacon_type=CJ_TEMPHUM_TYPE):
         """Initialize filter."""
-        super(CJMonitorFilter, self).__init__()
+        super().__init__()
         if company_id is None and beacon_type is None:
             raise ValueError("CJMonitorFilter needs at least one argument set")
         if company_id is not None:
@@ -48,7 +48,7 @@ class IBeaconFilter(DeviceFilter):
 
     def __init__(self, uuid=None, major=None, minor=None):
         """Initialize filter."""
-        super(IBeaconFilter, self).__init__()
+        super().__init__()
         if uuid is None and major is None and minor is None:
             raise ValueError("IBeaconFilter needs at least one argument set")
         if uuid is not None:
@@ -64,7 +64,7 @@ class EddystoneFilter(DeviceFilter):
 
     def __init__(self, namespace=None, instance=None):
         """Initialize filter."""
-        super(EddystoneFilter, self).__init__()
+        super().__init__()
         if namespace is None and instance is None:
             raise ValueError("EddystoneFilter needs at least one argument set")
         if namespace is not None:
@@ -78,7 +78,7 @@ class EstimoteFilter(DeviceFilter):
 
     def __init__(self, identifier=None, protocol_version=None):
         """Initialize filter."""
-        super(EstimoteFilter, self).__init__()
+        super().__init__()
         if identifier is None and protocol_version is None:
             raise ValueError("EstimoteFilter needs at least one argument set")
         if identifier is not None:
@@ -92,7 +92,7 @@ class ExposureNotificationFilter(DeviceFilter):
 
     def __init__(self, identifier):
         """Initialize filter."""
-        super(ExposureNotificationFilter, self).__init__()
+        super().__init__()
         if identifier is None:
             raise ValueError("ExposureNotificationFilter needs identifier to be set")
         self.properties['identifier'] = identifier
@@ -103,11 +103,11 @@ class BtAddrFilter(DeviceFilter):
 
     def __init__(self, bt_addr):
         """Initialize filter."""
-        super(BtAddrFilter, self).__init__()
+        super().__init__()
         try:
             bt_addr = bt_addr.lower()
-        except AttributeError:
-            raise ValueError("bt_addr({}) wasn't a string".format(bt_addr))
+        except AttributeError as exc:
+            raise ValueError("bt_addr({}) wasn't a string".format(bt_addr)) from exc
         if not is_valid_mac(bt_addr):
             raise ValueError("Invalid bluetooth MAC address given,"
                              " format should match aa:bb:cc:dd:ee:ff")
diff --git a/beacontools/structs/eddystone.py b/beacontools/structs/eddystone.py
index 0b9944c..bca2078 100644
--- a/beacontools/structs/eddystone.py
+++ b/beacontools/structs/eddystone.py
@@ -10,7 +10,9 @@
     "tx_power" / Int8sl,
     "namespace" / Array(10, Byte),
     "instance" / Array(6, Byte),
-    "rfu" / Array(2, Byte)
+    # commented out because it is not used anyway and there seem to be beacons which
+    # don't send it at all (see https://github.com/citruz/beacontools/issues/39)
+    # "rfu" / Array(2, Byte)
 )
 
 EddystoneURLFrame = Struct(
diff --git a/setup.py b/setup.py
index 08f0145..b453bdc 100644
--- a/setup.py
+++ b/setup.py
@@ -13,7 +13,7 @@
 setup(
     name='beacontools',
 
-    version='2.0.0',
+    version='2.0.1',
 
     description='A Python library for working with various types of Bluetooth LE Beacons.',
     long_description=long_description,