diff --git a/litellm/main.py b/litellm/main.py
index 89750ef46b..ae5d675c63 100644
--- a/litellm/main.py
+++ b/litellm/main.py
@@ -1417,9 +1417,15 @@ def completion(
                 return response
             response = model_response
         elif custom_llm_provider == "vertex_ai":
-            vertex_ai_project = litellm.vertex_project or get_secret("VERTEXAI_PROJECT")
-            vertex_ai_location = litellm.vertex_location or get_secret(
-                "VERTEXAI_LOCATION"
+            vertex_ai_project = (
+                optional_params.pop("vertex_ai_project", None)
+                or litellm.vertex_project
+                or get_secret("VERTEXAI_PROJECT")
+            )
+            vertex_ai_location = (
+                optional_params.pop("vertex_ai_location", None)
+                or litellm.vertex_location
+                or get_secret("VERTEXAI_LOCATION")
             )
 
             model_response = vertex_ai.completion(
diff --git a/litellm/tests/test_amazing_vertex_completion.py b/litellm/tests/test_amazing_vertex_completion.py
index 8467e44341..85c1cb9337 100644
--- a/litellm/tests/test_amazing_vertex_completion.py
+++ b/litellm/tests/test_amazing_vertex_completion.py
@@ -95,7 +95,8 @@ def test_vertex_ai():
         + litellm.vertex_code_text_models
     )
     litellm.set_verbose = False
-    litellm.vertex_project = "reliablekeys"
+    vertex_ai_project = "reliablekeys"
+    # litellm.vertex_project = "reliablekeys"
 
     test_models = random.sample(test_models, 1)
     # test_models += litellm.vertex_language_models  # always test gemini-pro
@@ -117,6 +118,7 @@ def test_vertex_ai():
                 model=model,
                 messages=[{"role": "user", "content": "hi"}],
                 temperature=0.7,
+                vertex_ai_project=vertex_ai_project,
             )
             print("\nModel Response", response)
             print(response)
diff --git a/litellm/utils.py b/litellm/utils.py
index 2bc1d34e9e..63fab74ccb 100644
--- a/litellm/utils.py
+++ b/litellm/utils.py
@@ -3351,6 +3351,10 @@ def get_optional_params(
             custom_llm_provider != "bedrock" and custom_llm_provider != "sagemaker"
         ):  # allow dynamically setting boto3 init logic
             continue
+        elif (
+            k.startswith("vertex_") and custom_llm_provider != "vertex_ai"
+        ):  # allow dynamically setting vertex ai init logic
+            continue
         passed_params[k] = v
     default_params = {
         "functions": None,