diff --git a/testing/check_fc_files.py b/testing/check_fc_files.py
index ca8fa7340..1d41a3b7a 100755
--- a/testing/check_fc_files.py
+++ b/testing/check_fc_files.py
@@ -246,7 +246,7 @@ def analyze_fc_file(fc_path):
 
             # If the reduced path still ends with a special character, something went wrong.
             # Instead of guessing the possible buggy characters, list the allowed ones.
-            if reduced_path and not re.match(r'[-0-9A-Za-z_\]~ᠰ]', reduced_path[-1]):
+            if reduced_path and not re.match(r'[-0-9A-Za-z_@\]~ᠰ]', reduced_path[-1]):
                 if path != '/':
                     if reduced_path == path:
                         print(f"{prefix}unexpected end of file pattern for {path}")