diff --git a/python/timing/cli/toolbox.py b/python/timing/cli/toolbox.py
index 99cf5e5..2dbeb3f 100644
--- a/python/timing/cli/toolbox.py
+++ b/python/timing/cli/toolbox.py
@@ -104,7 +104,7 @@ def sanitizeConnectionPaths(aConnectionPaths):
 
     lConnectionList = aConnectionPaths.split(';')
     for i,c in enumerate(lConnectionList):
-        if re.match('^\w+://.*', c) is None:
+        if re.match(r'^\w+://.*', c) is None:
             lConnectionList[i] = 'file://'+c
     return ';'.join(lConnectionList)
 # ------------------------------------------------------------------------------