diff --git a/tests/by-util/test_mktemp.rs b/tests/by-util/test_mktemp.rs
index e40d5c06c..b4d9c6c27 100644
--- a/tests/by-util/test_mktemp.rs
+++ b/tests/by-util/test_mktemp.rs
@@ -880,7 +880,7 @@ fn test_empty_tmpdir_env_var() {
             "{stderr}"
         );
         assert!(
-            stderr.ends_with("/tmp\tmp.XXXXXXXXXX': No such file or directory\n"),
+            stderr.ends_with("/tmp\\tmp.XXXXXXXXXX': No such file or directory\n"),
             "{stderr}",
         );
     }
@@ -901,7 +901,7 @@ fn test_empty_tmpdir_env_var() {
             "{stderr}"
         );
         assert!(
-            stderr.ends_with("/tmp\tmp.XXXXXXXXXX': No such file or directory\n"),
+            stderr.ends_with("/tmp\\tmp.XXXXXXXXXX': No such file or directory\n"),
             "{stderr}",
         );
     }