diff --git a/labgrid/driver/smallubootdriver.py b/labgrid/driver/smallubootdriver.py
index 98327ab53..7913e498b 100644
--- a/labgrid/driver/smallubootdriver.py
+++ b/labgrid/driver/smallubootdriver.py
@@ -96,7 +96,10 @@ def _run(self, cmd: str, *, timeout: int = 30, codec: str = "utf-8", decodeerror
         cmp_command = f"echo{marker}; {cmd}; echo{marker}"
 
         self.console.sendline(cmp_command)
-        _, before, _, _ = self.console.expect(self.prompt, timeout=timeout)
+        while True:
+            _, before, _, _ = self.console.expect(self.prompt, timeout=timeout)
+            if len(before) > 4:
+                break
 
         data = re_vt100.sub(
             '', before.decode('utf-8'), count=1000000