diff --git a/tools/binman/ftest.py b/tools/binman/ftest.py
index 03eb7f8..9f6688e 100644
--- a/tools/binman/ftest.py
+++ b/tools/binman/ftest.py
@@ -345,8 +345,9 @@
             Arguments to pass, as a list of strings
             kwargs: Arguments to pass to Command.RunPipe()
         """
-        result = command.run_pipe([[self._binman_pathname] + list(args)],
-                capture=True, capture_stderr=True, raise_on_error=False)
+        all_args = [self._binman_pathname] + list(args)
+        result = command.run_one(*all_args, capture=True, capture_stderr=True,
+                                 raise_on_error=False)
         if result.return_code and kwargs.get('raise_on_error', True):
             raise Exception("Error running '%s': %s" % (' '.join(args),
                             result.stdout + result.stderr))