diff --git a/scripts/data_collector/yahoo/collector.py b/scripts/data_collector/yahoo/collector.py
index 889b03a0d..6f1003a97 100644
--- a/scripts/data_collector/yahoo/collector.py
+++ b/scripts/data_collector/yahoo/collector.py
@@ -414,7 +414,7 @@ class YahooCollectorUS(YahooCollector, ABC):
         pass
 
     def normalize_symbol(self, symbol):
-        return symbol.upper()
+        return code_to_fname(symbol).upper()
 
     @property
     def _timezone(self):