diff --git a/freqtrade/plugins/pairlist/pairlist_helpers.py b/freqtrade/plugins/pairlist/pairlist_helpers.py
index 9bbd85182..cbe79c5f5 100644
--- a/freqtrade/plugins/pairlist/pairlist_helpers.py
+++ b/freqtrade/plugins/pairlist/pairlist_helpers.py
@@ -28,6 +28,7 @@ def expand_pairlist(
             except re.error as err:
                 raise ValueError(f"Wildcard error in {pair_wc}, {err}")
 
+        # Remove wildcard pairs that didn't have a match.
         result = [element for element in result if re.fullmatch(r"^[A-Za-z0-9:/-]+$", element)]
 
     else: