diff --git a/meta/lib/oeqa/utils/subprocesstweak.py b/meta/lib/oeqa/utils/subprocesstweak.py
index 3e43ed547b..1774513023 100644
--- a/meta/lib/oeqa/utils/subprocesstweak.py
+++ b/meta/lib/oeqa/utils/subprocesstweak.py
@@ -8,16 +8,11 @@ import subprocess
 class OETestCalledProcessError(subprocess.CalledProcessError):
     def __str__(self):
         def strify(o):
-            if isinstance(o, bytes):
-                return o.decode("utf-8", errors="replace")
-            else:
-                return o
+            return o.decode("utf-8", errors="replace") if isinstance(o, bytes) else o
 
-        s = "Command '%s' returned non-zero exit status %d" % (self.cmd, self.returncode)
-        if hasattr(self, "output") and self.output:
-            s = s + "\nStandard Output: " + strify(self.output)
-        if hasattr(self, "stderr") and self.stderr:
-            s = s + "\nStandard Error: " + strify(self.stderr)
+        s = super().__str__()
+        s = s + "\nStandard Output: " + strify(self.output)
+        s = s + "\nStandard Error: " + strify(self.stderr)
         return s
 
 def errors_have_output():