diff --git a/adafruit_connection_manager.py b/adafruit_connection_manager.py
index 27f8a7b..b195d19 100644
--- a/adafruit_connection_manager.py
+++ b/adafruit_connection_manager.py
@@ -74,7 +74,7 @@ def wrap_socket(  # pylint: disable=unused-argument
         if hasattr(self._iface, "TLS_MODE"):
             return _FakeSSLSocket(socket, self._iface.TLS_MODE)
 
-        raise AttributeError("This radio does not support TLS/HTTPS")
+        raise ValueError("This radio does not support TLS/HTTPS")
 
 
 def create_fake_ssl_context(
@@ -159,7 +159,7 @@ def get_radio_socketpool(radio):
                 ssl_context = create_fake_ssl_context(pool, radio)
 
         else:
-            raise AttributeError(f"Unsupported radio class: {class_name}")
+            raise ValueError(f"Unsupported radio class: {class_name}")
 
         _global_key_by_socketpool[pool] = key
         _global_socketpools[key] = pool
diff --git a/tests/get_radio_test.py b/tests/get_radio_test.py
index 9844e9e..5631bdb 100644
--- a/tests/get_radio_test.py
+++ b/tests/get_radio_test.py
@@ -55,7 +55,7 @@ def test_get_radio_socketpool_wiznet5k(  # pylint: disable=unused-argument
 
 def test_get_radio_socketpool_unsupported():
     radio = mocket.MockRadio.Unsupported()
-    with pytest.raises(AttributeError) as context:
+    with pytest.raises(ValueError) as context:
         adafruit_connection_manager.get_radio_socketpool(radio)
     assert "Unsupported radio class" in str(context)
 
@@ -100,7 +100,7 @@ def test_get_radio_ssl_context_wiznet5k(  # pylint: disable=unused-argument
 
 def test_get_radio_ssl_context_unsupported():
     radio = mocket.MockRadio.Unsupported()
-    with pytest.raises(AttributeError) as context:
+    with pytest.raises(ValueError) as context:
         adafruit_connection_manager.get_radio_ssl_context(radio)
     assert "Unsupported radio class" in str(context)
 
diff --git a/tests/protocol_test.py b/tests/protocol_test.py
index 98b5296..5ddac99 100644
--- a/tests/protocol_test.py
+++ b/tests/protocol_test.py
@@ -18,7 +18,7 @@ def test_get_https_no_ssl():
     connection_manager = adafruit_connection_manager.ConnectionManager(mock_pool)
 
     # verify not sending in a SSL context for a HTTPS call errors
-    with pytest.raises(AttributeError) as context:
+    with pytest.raises(ValueError) as context:
         connection_manager.get_socket(mocket.MOCK_HOST_1, 443, "https:")
     assert "ssl_context must be set" in str(context)
 
diff --git a/tests/ssl_context_test.py b/tests/ssl_context_test.py
index 2f2e370..02bf96e 100644
--- a/tests/ssl_context_test.py
+++ b/tests/ssl_context_test.py
@@ -58,7 +58,7 @@ def test_connect_wiznet5k_https_not_supported(  # pylint: disable=unused-argumen
     connection_manager = adafruit_connection_manager.ConnectionManager(mock_pool)
 
     # verify a HTTPS call for a board without built in WiFi and SSL support errors
-    with pytest.raises(AttributeError) as context:
+    with pytest.raises(ValueError) as context:
         connection_manager.get_socket(
             mocket.MOCK_HOST_1, 443, "https:", ssl_context=ssl_context
         )