diff --git a/src/util/helper.py b/src/util/helper.py
index 1c79dd8f..5383e5a3 100644
--- a/src/util/helper.py
+++ b/src/util/helper.py
@@ -296,7 +296,7 @@ def getIpType(ip):
         return "onion"
     elif ":" in ip:
         return "ipv6"
-    elif re.match("[0-9\.]+$", ip):
+    elif re.match(r"[0-9\.]+$", ip):
         return "ipv4"
     else:
         return "unknown"