diff --git a/mlir/test/python/ir/auto_location.py b/mlir/test/python/ir/auto_location.py
index c2d51083c1379..a45ca48b5c484 100644
--- a/mlir/test/python/ir/auto_location.py
+++ b/mlir/test/python/ir/auto_location.py
@@ -34,7 +34,7 @@ def testInferLocations():
         two = arith.constant(IndexType.get(), 2)
 
         # fmt: off
-        # CHECK: loc(callsite("testInferLocations"("{{.*}}[[SEP:[/\\]]]test[[SEP]]python[[SEP]]ir[[SEP]]auto_location.py":31:13 to :43) at callsite("run"("{{.*}}[[SEP]]test[[SEP]]python[[SEP]]ir[[SEP]]auto_location.py":13:4 to :7) at "<module>"("{{.*}}[[SEP]]test[[SEP]]python[[SEP]]ir[[SEP]]auto_location.py":26:1 to :4))))
+        # CHECK: loc(callsite("testInferLocations"("{{.*}}[[SEP:[/\\]+]]test[[SEP]]python[[SEP]]ir[[SEP]]auto_location.py":31:13 to :43) at callsite("run"("{{.*}}[[SEP]]test[[SEP]]python[[SEP]]ir[[SEP]]auto_location.py":13:4 to :7) at "<module>"("{{.*}}[[SEP]]test[[SEP]]python[[SEP]]ir[[SEP]]auto_location.py":26:1 to :4))))
         # fmt: on
         print(op.location)