diff --git a/fix/upp/testbed_fields_rtma.txt b/fix/upp/testbed_fields_rtma.txt
index 2dae2a30b..53d7795be 100644
--- a/fix/upp/testbed_fields_rtma.txt
+++ b/fix/upp/testbed_fields_rtma.txt
@@ -1,4 +1,4 @@
-parmcat=16 parm=196
+REFC:entire atmosphere (considered as a single layer)
 TMP:2 m above ground
 DPT:2 m above ground
 CAPE:90-0 mb above ground