1 files changed, 2 insertions, 1 deletions
diff --git a/src/xtools/pnodes.py b/src/xtools/pnodes.py
index 243580de0..4b7e8a5f9 100755
--- a/src/xtools/pnodes.py
+++ b/src/xtools/pnodes.py
@@ -258,7 +258,8 @@ def read_kinds(filename):
                     raise ParseError(lr, 'unknown conversion ' + conv)
             else:
                 conv = None
-
+            if len(fields) > 1 and conv != 'grp':
+                raise ParseError(lr, 'bad conversion for multiple fields')
             # Read function
             l = lr.get()
             mf = pat_func.match(l)