diff --git a/archivebox/parsers/__init__.py b/archivebox/parsers/__init__.py
index 992446ba..c033ab28 100644
--- a/archivebox/parsers/__init__.py
+++ b/archivebox/parsers/__init__.py
@@ -154,7 +154,7 @@ def save_text_as_source(raw_text: str, filename: str='{ts}-stdin.txt', out_dir:
 
     for entry in raw_text.split():
         try:
-            if Path(entry).exists:
+            if Path(entry).exists():
                 referenced_texts += Path(entry).read_text()
         except Exception as err:
             print(err)