diff --git a/src/pyipp/serializer.py b/src/pyipp/serializer.py
index 3a9df1b66..690616ca6 100644
--- a/src/pyipp/serializer.py
+++ b/src/pyipp/serializer.py
@@ -36,7 +36,7 @@ def construct_attribute(name: str, value: Any, tag: IppTag | None = None) -> byt
     byte_str = b""
 
     if not tag and not (tag := ATTRIBUTE_TAG_MAP.get(name, None)):
-        _LOGGER.debug("Unknown IppTag for %s", name)
+        _LOGGER.warning("Unknown IppTag for %s", name)
         return byte_str
 
     if isinstance(value, (list, tuple, set)):
diff --git a/src/pyipp/tags.py b/src/pyipp/tags.py
index af343020a..90ed8d22b 100644
--- a/src/pyipp/tags.py
+++ b/src/pyipp/tags.py
@@ -62,4 +62,5 @@
     "media": IppTag.NAME,
     "center-of-pixel": IppTag.BOOLEAN,
     "sides": IppTag.KEYWORD,
+    "print-scaling": IppTag.KEYWORD,
 }