diff --git a/trunner/test_runner.py b/trunner/test_runner.py
index 4c40ca9b..4fc07fd2 100644
--- a/trunner/test_runner.py
+++ b/trunner/test_runner.py
@@ -257,6 +257,9 @@ def run_tests(self, tests: Sequence[TestOptions]) -> Sequence[TestResult]:
             if not self.ctx.target.rootfs and test.bootloader is not None and test.bootloader.apps:
                 test.should_reboot = True
 
+            if self.ctx.should_flash and self.ctx.port:
+                self.target.dut.expect(r".+")
+
             result = TestResult(test.name)
             self._print_test_header_begin(test)