diff --git a/test/api_endpoints/test_dbquery_endpoints.py b/test/api_endpoints/test_dbquery_endpoints.py
index 837186fb..6467e62e 100644
--- a/test/api_endpoints/test_dbquery_endpoints.py
+++ b/test/api_endpoints/test_dbquery_endpoints.py
@@ -26,7 +26,7 @@ def client():
 @pytest.fixture(scope="session")
 def test_mac():
     # Generate a unique MAC for each test run
-    return "aa:bb:cc:" + ":".join(f"{random.randint(0, 255):02X}" for _ in range(3))
+    return "aa:bb:cc:" + ":".join(f"{random.randint(0, 255):02X}" for _ in range(3)).lower()
 
 
 def auth_headers(token):
diff --git a/test/api_endpoints/test_device_endpoints.py b/test/api_endpoints/test_device_endpoints.py
index 3d903fe7..007fbf0f 100644
--- a/test/api_endpoints/test_device_endpoints.py
+++ b/test/api_endpoints/test_device_endpoints.py
@@ -28,7 +28,7 @@ def client():
 @pytest.fixture
 def test_mac():
     # Generate a unique MAC for each test run
-    return "aa:bb:cc:" + ":".join(f"{random.randint(0, 255):02X}" for _ in range(3))
+    return "aa:bb:cc:" + ":".join(f"{random.randint(0, 255):02X}" for _ in range(3)).lower()
 
 
 def auth_headers(token):
diff --git a/test/api_endpoints/test_devices_endpoints.py b/test/api_endpoints/test_devices_endpoints.py
index b885c48c..ce498227 100644
--- a/test/api_endpoints/test_devices_endpoints.py
+++ b/test/api_endpoints/test_devices_endpoints.py
@@ -24,7 +24,7 @@ def client():
 @pytest.fixture
 def test_mac():
     # Generate a unique MAC for each test run
-    return "aa:bb:cc:" + ":".join(f"{random.randint(0, 255):02X}" for _ in range(3))
+    return "aa:bb:cc:" + ":".join(f"{random.randint(0, 255):02X}" for _ in range(3)).lower()
 
 
 def auth_headers(token):
diff --git a/test/api_endpoints/test_events_endpoints.py b/test/api_endpoints/test_events_endpoints.py
index fe4c4b57..3f5d1f63 100644
--- a/test/api_endpoints/test_events_endpoints.py
+++ b/test/api_endpoints/test_events_endpoints.py
@@ -26,7 +26,7 @@ def client():
 @pytest.fixture
 def test_mac():
     # Generate a unique MAC for each test run
-    return "aa:bb:cc:" + ":".join(f"{random.randint(0, 255):02X}" for _ in range(3))
+    return "aa:bb:cc:" + ":".join(f"{random.randint(0, 255):02X}" for _ in range(3)).lower()
 
 
 def auth_headers(token):
diff --git a/test/api_endpoints/test_graphq_endpoints.py b/test/api_endpoints/test_graphq_endpoints.py
index 4dabd223..d552a7dc 100644
--- a/test/api_endpoints/test_graphq_endpoints.py
+++ b/test/api_endpoints/test_graphq_endpoints.py
@@ -23,7 +23,7 @@ def client():
 @pytest.fixture
 def test_mac():
     # Generate a unique MAC for each test run
-    return "aa:bb:cc:" + ":".join(f"{random.randint(0, 255):02X}" for _ in range(3))
+    return "aa:bb:cc:" + ":".join(f"{random.randint(0, 255):02X}" for _ in range(3)).lower().lower()
 
 
 def auth_headers(token):
diff --git a/test/api_endpoints/test_history_endpoints.py b/test/api_endpoints/test_history_endpoints.py
index bbee8f49..1728bec4 100644
--- a/test/api_endpoints/test_history_endpoints.py
+++ b/test/api_endpoints/test_history_endpoints.py
@@ -24,7 +24,7 @@ def client():
 @pytest.fixture
 def test_mac():
     # Generate a unique MAC for each test run
-    return "aa:bb:cc:" + ":".join(f"{random.randint(0, 255):02X}" for _ in range(3))
+    return "aa:bb:cc:" + ":".join(f"{random.randint(0, 255):02X}" for _ in range(3)).lower()
 
 
 def auth_headers(token):
diff --git a/test/api_endpoints/test_nettools_endpoints.py b/test/api_endpoints/test_nettools_endpoints.py
index bab3133c..8081dcba 100644
--- a/test/api_endpoints/test_nettools_endpoints.py
+++ b/test/api_endpoints/test_nettools_endpoints.py
@@ -19,7 +19,7 @@ def client():
 @pytest.fixture
 def test_mac():
     # Generate a unique MAC for each test run
-    return "aa:bb:cc:" + ":".join(f"{random.randint(0, 255):02X}" for _ in range(3))
+    return "aa:bb:cc:" + ":".join(f"{random.randint(0, 255):02X}" for _ in range(3)).lower()
 
 
 def auth_headers(token):
diff --git a/test/api_endpoints/test_sessions_endpoints.py b/test/api_endpoints/test_sessions_endpoints.py
index e6aef41d..6aed9892 100644
--- a/test/api_endpoints/test_sessions_endpoints.py
+++ b/test/api_endpoints/test_sessions_endpoints.py
@@ -26,7 +26,7 @@ def client():
 @pytest.fixture
 def test_mac():
     # Generate a unique MAC for each test run
-    return "aa:bb:cc:" + ":".join(f"{random.randint(0, 255):02X}" for _ in range(3))
+    return "aa:bb:cc:" + ":".join(f"{random.randint(0, 255):02X}" for _ in range(3)).lower()
 
 
 def auth_headers(token):
diff --git a/test/api_endpoints/test_settings_endpoints.py b/test/api_endpoints/test_settings_endpoints.py
index a44488e6..01e1a379 100644
--- a/test/api_endpoints/test_settings_endpoints.py
+++ b/test/api_endpoints/test_settings_endpoints.py
@@ -24,7 +24,7 @@ def client():
 @pytest.fixture
 def test_mac():
     # Generate a unique MAC for each test run
-    return "aa:bb:cc:" + ":".join(f"{random.randint(0, 255):02X}" for _ in range(3))
+    return "aa:bb:cc:" + ":".join(f"{random.randint(0, 255):02X}" for _ in range(3)).lower()
 
 
 def auth_headers(token):
diff --git a/test/server/test_graphql_endpoints.py b/test/server/test_graphql_endpoints.py
index d5a44e55..474a1c89 100755
--- a/test/server/test_graphql_endpoints.py
+++ b/test/server/test_graphql_endpoints.py
@@ -24,7 +24,7 @@ def client():
 @pytest.fixture
 def test_mac():
     # Generate a unique MAC for each test run
-    return "aa:bb:cc:" + ":".join(f"{random.randint(0, 255):02X}" for _ in range(3))
+    return "aa:bb:cc:" + ":".join(f"{random.randint(0, 255):02X}" for _ in range(3)).lower()
 
 
 def auth_headers(token):