diff --git a/modules/aeolus/datasource.py b/modules/aeolus/datasource.py
index edc6f88dabe9de7f29323c8328affe5034879621..702c8ad3086664a22e9cab8b1e30a5c339337c4f 100644
--- a/modules/aeolus/datasource.py
+++ b/modules/aeolus/datasource.py
@@ -54,7 +54,7 @@ class Files:
 
 class GOESL1B(Files):
     def __init__(self, files_path, band='14'):
-        super().__init__(files_path, 10, 'OR_ABI-L1b-RadC-M3C'+band+'*.nc')
+        super().__init__(files_path, 10, 'OR_ABI-L1b-RadC-M*C'+band+'*.nc')
 
     def get_datetime(self, pathname):
         filename = os.path.split(pathname)[1]