diff --git a/src/modules/module_21800.c b/src/modules/module_21800.c
index de6847163..ca567e9f3 100644
--- a/src/modules/module_21800.c
+++ b/src/modules/module_21800.c
@@ -96,6 +96,14 @@ bool module_unstable_warning (MAYBE_UNUSED const hashconfig_t *hashconfig, MAYBE
     }
   }
 
+  // amdgpu-pro-20.50-1234664-ubuntu-20.04 (rocr)
+  // test_1620713931/test_report.log:! unhandled return code 255, cmdline : cat test_1620713931/21800_passwords.txt | ./hashcat --quiet --potfile-disable --runtime 400 --hwmon-disable -O -D 2 --backend-vector-width 4 -a 0 -m 21800 test_1620713931/21800_hashes.txt
+  // test_1620719578/test_report.log:! unhandled return code 255, cmdline : cat test_1620719578/21800_passwords.txt | ./hashcat --quiet --potfile-disable --runtime 400 --hwmon-disable -D 2 --backend-vector-width 4 -a 0 -m 21800 test_1620719578/21800_hashes.txt
+  if ((device_param->opencl_device_vendor_id == VENDOR_ID_AMD) && (device_param->has_vperm == true))
+  {
+    return true;
+  }
+
   // amdgpu-pro-20.50-1234664-ubuntu-20.04 (legacy)
   // test_1619943729/test_report.log:! unhandled return code 255, cmdline : cat test_1619943729/21800_passwords.txt | ./hashcat --quiet --potfile-disable --runtime 400 --hwmon-disable -O -D 2 --backend-vector-width 1 -a 0 -m 21800 test_1619943729/21800_hashes.txt
   // test_1619955152/test_report.log:! unhandled return code 255, cmdline : cat test_1619955152/21800_passwords.txt | ./hashcat --quiet --potfile-disable --runtime 400 --hwmon-disable -D 2 --backend-vector-width 4 -a 0 -m 21800 test_1619955152/21800_hashes.txt