diff --git a/pysm3/data/presets.cfg b/pysm3/data/presets.cfg
index 2154dddc..8e353302 100644
--- a/pysm3/data/presets.cfg
+++ b/pysm3/data/presets.cfg
@@ -357,7 +357,7 @@ max_nside = 4096
 [rg1]
 class = "WebSkyRadioGalaxies"
 websky_version = "0.4"
-input_units = "MJy / sr"
+input_units = "Jy / sr"
 interpolation_kind = "linear"
 apply_SPT_correction = false
 max_nside = 4096