diff --git a/tests/tcg/aarch64/gdbstub/test-mte.py b/tests/tcg/aarch64/gdbstub/test-mte.py
index 2db0663c1a..66f9c25f8a 100644
--- a/tests/tcg/aarch64/gdbstub/test-mte.py
+++ b/tests/tcg/aarch64/gdbstub/test-mte.py
@@ -18,7 +18,7 @@ import re
 from test_gdbstub import main, report
 
 
-PATTERN_0 = "Memory tags for address 0x[0-9a-f]+ match \(0x[0-9a-f]+\)."
+PATTERN_0 = "Memory tags for address 0x[0-9a-f]+ match \\(0x[0-9a-f]+\\)."
 PATTERN_1 = ".*(0x[0-9a-f]+)"