diff --git a/tools/binman/ftest.py b/tools/binman/ftest.py
index 7c8b3eb..928d360 100644
--- a/tools/binman/ftest.py
+++ b/tools/binman/ftest.py
@@ -3232,7 +3232,7 @@
         with test_util.capture_sys_output() as (stdout, stderr):
             control.ReplaceEntries(updated_fname, None, outdir, [])
         self.assertIn("Skipping entry '/u-boot' from missing file",
-                      stdout.getvalue())
+                      stderr.getvalue())
 
     def testReplaceCmdMap(self):
         """Test replacing a file fron an image on the command line"""