diff --git a/pyaccuwage/__init__.py b/pyaccuwage/__init__.py
index 513b8c6..c7db35c 100644
--- a/pyaccuwage/__init__.py
+++ b/pyaccuwage/__init__.py
@@ -64,7 +64,7 @@ def dump(fp, records, delim=None):
 def dumps(records, delim=None):
     import io
     fp = io.BytesIO()
-    dump(records, fp, delim=delim)
+    dump(fp, records, delim=delim)
     fp.seek(0)
     return fp.read()