diff --git a/error.c b/error.c
index d3455ab9e6..a52b7710d2 100644
--- a/error.c
+++ b/error.c
@@ -93,7 +93,7 @@ QDict *error_get_data(Error *err)
 void error_set_field(Error *err, const char *field, const char *value)
 {
     QDict *dict = qdict_get_qdict(err->obj, "data");
-    return qdict_put(dict, field, qstring_from_str(value));
+    qdict_put(dict, field, qstring_from_str(value));
 }
 
 void error_free(Error *err)