diff --git a/trunner/harness/psh.py b/trunner/harness/psh.py
index faab06a3d..a0f0cd401 100644
--- a/trunner/harness/psh.py
+++ b/trunner/harness/psh.py
@@ -72,7 +72,15 @@ def __call__(self, result: TestResult) -> TestResult:
         if self.cmd is not None:
             self.dut.send(self.cmd + "\n")
             try:
-                self.dut.expect(f"{self.cmd}(\r+)\n")
+                # ash wraps up lines longer than 80 characters
+                if len(self.cmd) <= 80 - len(self.prompt):
+                    self.dut.expect(f"{self.cmd}(\r+)\n")
+                else:
+                    full_cmd = ""
+                    while full_cmd not in self.cmd:
+                        self.dut.expect("(\r+)\n")
+                        full_cmd += self.dut.before
+
             except (pexpect.TIMEOUT, pexpect.EOF) as e:
                 raise ShellError(
                     msg="Couldn't find the echoed command!",