diff --git a/litellm/proxy/openai_files_endpoints/batch_file_validation.py b/litellm/proxy/openai_files_endpoints/batch_file_validation.py
index bf6f6e2f829..0aee5e8cc54 100644
--- a/litellm/proxy/openai_files_endpoints/batch_file_validation.py
+++ b/litellm/proxy/openai_files_endpoints/batch_file_validation.py
@@ -108,7 +108,7 @@ def check_batch_file_upload(
 ) -> BatchFileValidationFailure | None:
     if filename is None or not filename.lower().endswith(".jsonl"):
         return BatchFileWrongExtension(filename=filename or "")
-    if max_batch_file_size_mb is not None:
+    if max_batch_file_size_mb is not None and max_batch_file_size_mb > 0:
         size_bytes: Final = _file_size_bytes(file_source)
         if size_bytes > max_batch_file_size_mb * _MB:
             return BatchFileTooLarge(size_bytes=size_bytes, limit_mb=max_batch_file_size_mb)
diff --git a/tests/test_litellm/proxy/openai_files_endpoint/test_files_batch_file_validation.py b/tests/test_litellm/proxy/openai_files_endpoint/test_files_batch_file_validation.py
index b4b0c5eb492..f5542fc0446 100644
--- a/tests/test_litellm/proxy/openai_files_endpoint/test_files_batch_file_validation.py
+++ b/tests/test_litellm/proxy/openai_files_endpoint/test_files_batch_file_validation.py
@@ -69,6 +69,12 @@ def test_no_cap_skips_size_check():
     assert check_batch_file_upload("batch.jsonl", content, None) is None
 
 
+@pytest.mark.parametrize("cap", [0, -3])
+def test_nonpositive_cap_disables_size_check(cap):
+    content = (VALID_LINE + b"\n") * 5000
+    assert check_batch_file_upload("batch.jsonl", content, cap) is None
+
+
 @pytest.mark.parametrize("content", [b"", b"\n\n", b"  \n\t\n"])
 def test_empty_file_rejected(content):
     assert check_batch_file_upload("batch.jsonl", content, None) == BatchFileEmpty()