diff --git a/src/main/java/com/conveyal/analysis/controllers/OpportunityDatasetController.java b/src/main/java/com/conveyal/analysis/controllers/OpportunityDatasetController.java
index 6373d3d66..ec46a3e23 100644
--- a/src/main/java/com/conveyal/analysis/controllers/OpportunityDatasetController.java
+++ b/src/main/java/com/conveyal/analysis/controllers/OpportunityDatasetController.java
@@ -345,6 +345,7 @@ private OpportunityDatasetUploadStatus createOpportunityDataset(Request req, Res
             parameters = extractStringParameters(formFields);
         } catch (Exception e) {
             status.completeWithError(e);
+            res.status(400);
             return status;
         }