diff --git a/tests/test_generator_creation.py b/tests/test_generator_creation.py
index e5cb560..e1767f4 100644
--- a/tests/test_generator_creation.py
+++ b/tests/test_generator_creation.py
@@ -4,14 +4,14 @@
 from rigging.generator import GenerateParams, LiteLLMGenerator, get_generator
 
 
-@pytest.mark.parametrize("identifier", ["test_model", "litellm:test_model"])
+@pytest.mark.parametrize("identifier", ["test_model", "litellm!test_model"])
 def test_get_generator_default_is_litellm(identifier: str) -> None:
     generator = get_generator(identifier)
     assert isinstance(generator, LiteLLMGenerator)
     assert generator.model == "test_model"
 
 
-@pytest.mark.parametrize("identifier", ["invalid:testing", "no_exist:stuff,args=123"])
+@pytest.mark.parametrize("identifier", ["invalid!testing", "no_exist!stuff,args=123"])
 def test_get_generator_invalid_provider(identifier: str) -> None:
     with pytest.raises(InvalidModelSpecifiedError):
         get_generator(identifier)
@@ -20,9 +20,9 @@ def test_get_generator_invalid_provider(identifier: str) -> None:
 @pytest.mark.parametrize(
     "identifier, valid_params",
     [
-        ("litellm:test_model,max_tokens=123,top_p=10", GenerateParams(max_tokens=123, top_p=10)),
-        ("litellm:test_model,temperature=0.5", GenerateParams(temperature=0.5)),
-        ("litellm:test_model,max_tokens=100,temperature=1.0", GenerateParams(max_tokens=100, temperature=1.0)),
+        ("litellm!test_model,max_tokens=123,top_p=10", GenerateParams(max_tokens=123, top_p=10)),
+        ("litellm!test_model,temperature=0.5", GenerateParams(temperature=0.5)),
+        ("test_model,max_tokens=100,temperature=1.0", GenerateParams(max_tokens=100, temperature=1.0)),
     ],
 )
 def test_get_generator_with_params(identifier: str, valid_params: GenerateParams) -> None: