diff --git a/modules/amv/intercompare.py b/modules/amv/intercompare.py
index 7ca6edc0d9723c68d7db8757d05b6349aa929800..ac963a9b756d542b4eec15a16d1f68f226dc4b95 100644
--- a/modules/amv/intercompare.py
+++ b/modules/amv/intercompare.py
@@ -113,7 +113,7 @@ def filter_amvs(amvs, qitype=amv_cqi_idx, qival=50, lat_range=None):
 
 def get_raob_dict_cdf(pathname):
     filename = os.path.split(pathname)[1]
-    dt_str = (((fname.split('raob_soundings'))[1]).split('.'))[0]
+    dt_str = (((filename.split('raob_soundings'))[1]).split('.'))[0]
     dto = datetime.datetime.strptime(dt_str, '%Y%m%d_%H%M').replace(tzinfo=timezone.utc)
 
     rtgrp = Dataset(pathname, 'r', format='NETCDF3')