diff --git a/klab.engine/src/main/java/org/integratedmodelling/klab/engine/rest/controllers/engine/EnginePublicController.java b/klab.engine/src/main/java/org/integratedmodelling/klab/engine/rest/controllers/engine/EnginePublicController.java
index 1f0c288f3..959b15c0b 100644
--- a/klab.engine/src/main/java/org/integratedmodelling/klab/engine/rest/controllers/engine/EnginePublicController.java
+++ b/klab.engine/src/main/java/org/integratedmodelling/klab/engine/rest/controllers/engine/EnginePublicController.java
@@ -178,7 +178,7 @@ public void exportData(@PathVariable String export, @RequestHeader(name = "Autho
 		if (s == null) {
 			throw new KlabIllegalStateException("observe in context: invalid session ID");
 		}
-
+		response.setCharacterEncoding("UTF-8");
 		boolean done = false;
 		IObservation obs = s.getObservation(observation);