diff --git a/modules/aeolus/aeolus_amv.py b/modules/aeolus/aeolus_amv.py
index a6fed882da198df332ede9a22b9a861b845ac11d..23b33b56b84e0a6d3a22008b2868b24b05895992 100644
--- a/modules/aeolus/aeolus_amv.py
+++ b/modules/aeolus/aeolus_amv.py
@@ -496,7 +496,7 @@ def create_file(filename, aeolus_to_amv_dct, aeolus_dct, amv_files):
         # lons, lats, pres, spd, dir, dist = aeolus_to_amv_dct.get(key)
         param_nd = aeolus_to_amv_dct.get(key)
         num_amvs.append(param_nd.shape[1])
-        namvs += len(param_nd.shape[1])
+        namvs += param_nd.shape[1]
 
         prof_s = aeolus_dct.get(key)
         prof = prof_s[0]