diff --git a/src/main/java/com/metaweb/gridworks/exporters/TsvExporter.java b/src/main/java/com/metaweb/gridworks/exporters/TsvExporter.java
index e8eee0afc..5c6149cdf 100644
--- a/src/main/java/com/metaweb/gridworks/exporters/TsvExporter.java
+++ b/src/main/java/com/metaweb/gridworks/exporters/TsvExporter.java
@@ -17,7 +17,7 @@ import com.metaweb.gridworks.model.Row;
 
 public class TsvExporter implements Exporter {
     public String getContentType() {
-        return "text/plain";
+        return "application/x-unknown";
     }
     
     public boolean takeWriter() {