diff --git a/tests/test_router_fallback_chain.py b/tests/test_router_fallback_chain.py
new file mode 100644
index 00000000000..79b94260382
--- /dev/null
+++ b/tests/test_router_fallback_chain.py
@@ -0,0 +1,26 @@
+import pytest
+from litellm import Router
+
+def test_router_fallbacks_initialization():
+    fallbacks = [
+        {"gpt-4": ["azure/gpt-4-east", "bedrock/claude-3-5-sonnet"]}
+    ]
+    router = Router(
+        model_list=[
+            {"model_name": "gpt-4", "litellm_params": {"model": "azure/gpt-4-east"}},
+            {"model_name": "azure/gpt-4-east", "litellm_params": {"model": "azure/gpt-4-east"}},
+            {"model_name": "bedrock/claude-3-5-sonnet", "litellm_params": {"model": "bedrock/claude-3-5-sonnet"}},
+        ],
+        fallbacks=fallbacks,
+    )
+    assert router.fallbacks == fallbacks
+    assert len(router.fallbacks) == 1
+    assert "gpt-4" in router.fallbacks[0]
+
+def test_router_empty_fallbacks():
+    router = Router(
+        model_list=[
+            {"model_name": "gpt-3.5-turbo", "litellm_params": {"model": "gpt-3.5-turbo"}}
+        ]
+    )
+    assert router.fallbacks is None or router.fallbacks == []
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