diff --git a/src/main/java/com/conveyal/analysis/controllers/RegionalAnalysisController.java b/src/main/java/com/conveyal/analysis/controllers/RegionalAnalysisController.java
index a60eccd2b..5cde0f9bc 100644
--- a/src/main/java/com/conveyal/analysis/controllers/RegionalAnalysisController.java
+++ b/src/main/java/com/conveyal/analysis/controllers/RegionalAnalysisController.java
@@ -666,7 +666,7 @@ public void registerEndpoints (spark.Service sparkService) {
             sparkService.get("/:_id", this::getRegionalAnalysis);
             sparkService.get("/:_id/all", this::getAllRegionalResults, toJson);
             sparkService.get("/:_id/grid/:format", this::getRegionalResults, toJson);
-            sparkService.get("/:_id/csv/:resultType", this::getCsvResults, toJson);
+            sparkService.get("/:_id/csv/:resultType", this::getCsvResults);
             sparkService.get("/:_id/scenarioJsonUrl", this::getScenarioJsonUrl, toJson);
             sparkService.delete("/:_id", this::deleteRegionalAnalysis, toJson);
             sparkService.post("", this::createRegionalAnalysis, toJson);