diff --git a/tests/local_testing/test_get_optional_params_embeddings.py b/tests/local_testing/test_get_optional_params_embeddings.py
index 60b71c9b849..83fbfe73125 100644
--- a/tests/local_testing/test_get_optional_params_embeddings.py
+++ b/tests/local_testing/test_get_optional_params_embeddings.py
@@ -165,11 +165,8 @@ def test_openai_non_text_embedding_3_drop_params_global():
 def test_azure_and_openai_compatible_drop_params():
     """
     Verify that dimensions parameter is correctly dropped on Azure and OpenAI compatible calls
-    when drop_params is True (either per-call or globally), and raises UnsupportedParamsError
-    otherwise.
+    when drop_params is True (either per-call or globally), while preserving it otherwise.
     """
-    from litellm.exceptions import UnsupportedParamsError
-
     prev_drop_params = litellm.drop_params
 
     # 1. Test Azure drop_params=True (per-call)
@@ -239,3 +236,21 @@ def test_azure_and_openai_compatible_drop_params():
     litellm.drop_params = prev_drop_params
 
 
+@pytest.mark.parametrize("provider", ["nvidia_nim", "lm_studio", "fireworks_ai"])
+def test_dedicated_openai_compatible_providers_drop_dimensions(provider):
+    """Keep dedicated provider mappings reachable when dimensions is dropped."""
+    prev_drop_params = litellm.drop_params
+    litellm.drop_params = False
+    try:
+        model, custom_llm_provider, _, _ = get_llm_provider(
+            model=f"{provider}/dummy-model"
+        )
+        optional_params = get_optional_params_embeddings(
+            model=model,
+            dimensions=512,
+            custom_llm_provider=custom_llm_provider,
+            drop_params=True,
+        )
+        assert "dimensions" not in optional_params
+    finally:
+        litellm.drop_params = prev_drop_params