diff --git a/tests/sdp_test.py b/tests/sdp_test.py
index 5e9708b..ac7256a 100644
--- a/tests/sdp_test.py
+++ b/tests/sdp_test.py
@@ -215,7 +215,7 @@ def test_pdu_parameter_length(caplog) -> None:
         transaction_id=0, error_code=sdp.ErrorCode.INVALID_SDP_VERSION
     )
     assert sdp.SDP_PDU.from_bytes(bytes(pdu)) == pdu
-    assert not re.search("Expect \d+ bytes, got \d+", caplog.text)
+    assert not re.search(r"Expect \d+ bytes, got \d+", caplog.text)
 
 
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