diff --git a/test_jobs/interpolate_visibilities.json b/test_jobs/interpolate_visibilities.json
index 8ed20fe165254d8efea67f3f06d2f5345987871c..a9ce3dea491423d5a858e8a500f78b3df24a63d3 100644
--- a/test_jobs/interpolate_visibilities.json
+++ b/test_jobs/interpolate_visibilities.json
@@ -1,4 +1,4 @@
 {
-  "msin": { "class":"Directory", "/data/L570745_SB000_uv_first10.MS"},
+  "msin": { "class":"Directory", "path":"/data/L570745_SB000_uv_first10.MS"},
   "window_size": 5
 }