diff --git a/passphrase.nimble b/passphrase.nimble
index 5e47488..76fbfad 100644
--- a/passphrase.nimble
+++ b/passphrase.nimble
@@ -34,5 +34,5 @@ task(dictionary, "Generate dictionary from BNC XML files"):
 
 
 before(build):
-  if not dirExists("src/dictionary.txt"):
+  if not fileExists("src/dictionary.txt"):
     dictionaryTask()