diff --git a/scanner.py b/scanner.py
index 83e97d7..563329e 100644
--- a/scanner.py
+++ b/scanner.py
@@ -68,6 +68,7 @@
 ]
 
 SIGNS=[
+'redis|^-ERR\s\w+',
 'http|^HTTP.*',
 'ssh|SSH-2.0-OpenSSH.*',
 'ssh|SSH-1.0-OpenSSH.*',