diff --git a/lib/core/common.py b/lib/core/common.py
index 438f3d8c3..ef1259785 100644
--- a/lib/core/common.py
+++ b/lib/core/common.py
@@ -872,5 +872,5 @@ def safeStringFormat(formatStr, params):
     return retVal
 
 def sanitizeAsciiString(string):
-    return "".join(char if ord(char) <= 128 else '?' for char in string)
+    return "".join(char if ord(char) < 128 else '?' for char in string)
     
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