diff --git a/apps/dnet-exporter-api/src/main/java/eu/dnetlib/SwaggerController.java b/apps/dnet-exporter-api/src/main/java/eu/dnetlib/SwaggerController.java
index c3cadff1..b53bbbc4 100644
--- a/apps/dnet-exporter-api/src/main/java/eu/dnetlib/SwaggerController.java
+++ b/apps/dnet-exporter-api/src/main/java/eu/dnetlib/SwaggerController.java
@@ -1,7 +1,4 @@
 package eu.dnetlib;
-import java.io.IOException;
-
-import javax.servlet.http.HttpServletResponse;
 
 import org.springframework.stereotype.Controller;
 import org.springframework.web.bind.annotation.RequestMapping;
@@ -10,10 +7,10 @@ import org.springframework.web.bind.annotation.RequestMapping;
 public class SwaggerController {
 
 	@RequestMapping(value = {
-		"/", "/docs"
+		"/", "/docs", "swagger-ui.html"
 	})
-	public void index(final HttpServletResponse response) throws IOException {
-		response.sendRedirect("swagger-ui.html");
+	public String index() {
+		return "redirect:swagger-ui/";
 	}
 
 }