diff --git a/api/sda/sda.go b/api/sda/sda.go
index 1f05b00..307604f 100644
--- a/api/sda/sda.go
+++ b/api/sda/sda.go
@@ -256,10 +256,8 @@ func Download(c *gin.Context) {
 	switch c.Param("type") {
 	case "encrypted":
 		if start > 0 {
-			// unset content-length
-			c.Header("Content-Length", "0")
 			log.Errorf("Start coordinate for encrypted files not implemented! %v", start)
-			c.String(http.StatusInternalServerError, "an error occurred")
+			c.String(http.StatusBadRequest, "Start coordinate for encrypted files not implemented!")
 
 			return
 		}