diff --git a/tests/test_dart-rttov.py b/tests/test_dart-rttov.py
index f5f3153317bb119559a60e05ba5ce5fbc5fd8a3f..b2f56e9540c6d66d6e75fe74395435ceae597336 100644
--- a/tests/test_dart-rttov.py
+++ b/tests/test_dart-rttov.py
@@ -5,7 +5,7 @@ import pandas as pd
 
 from dartwrf.obs import obsseq
 import dartwrf.obs.create_obsseq_in as osq
-import dartwrf.assim_synth_obs as aso
+import dartwrf.assimilate as aso
 from dartwrf import wrfout_add_geo
 
 import matplotlib as mpl