diff --git a/src/sinefit.py b/src/sinefit.py
index 1d673ac..942f6b7 100755
--- a/src/sinefit.py
+++ b/src/sinefit.py
@@ -23,7 +23,7 @@ def main(argv = None):
     try:
         args = f.parse_args(argv)
     except nilmtools.filter.MissingDestination as e:
-        rec = "float32_4"
+        rec = "float32_3"
         print "Source is %s (%s)" % (e.src.path, e.src.layout)
         print "Destination %s doesn't exist" % (e.dest.path)
         print "You could make it with a command like:"