diff --git a/src/main/java/net/sourceforge/plantuml/servlet/DiagramResponse.java b/src/main/java/net/sourceforge/plantuml/servlet/DiagramResponse.java
index cae74c8..03aed5b 100644
--- a/src/main/java/net/sourceforge/plantuml/servlet/DiagramResponse.java
+++ b/src/main/java/net/sourceforge/plantuml/servlet/DiagramResponse.java
@@ -76,7 +76,7 @@ class DiagramResponse {
         request = rq;
     }
 
-    void sendDiagram(String uml, int idx, boolean badRequestOnError) throws IOException {
+    void sendDiagram(String uml, int idx) throws IOException {
         response.addHeader("Access-Control-Allow-Origin", "*");
         response.setContentType(getContentType());
         SourceStringReader reader = new SourceStringReader(uml);
diff --git a/src/main/java/net/sourceforge/plantuml/servlet/ProxyServlet.java b/src/main/java/net/sourceforge/plantuml/servlet/ProxyServlet.java
index f99d8e2..c124122 100644
--- a/src/main/java/net/sourceforge/plantuml/servlet/ProxyServlet.java
+++ b/src/main/java/net/sourceforge/plantuml/servlet/ProxyServlet.java
@@ -85,7 +85,7 @@ public class ProxyServlet extends HttpServlet {
         // generate the response
         DiagramResponse dr = new DiagramResponse(response, getOutputFormat(fmt), request);
         try {
-            dr.sendDiagram(uml, 0, false);
+            dr.sendDiagram(uml, 0);
         } catch (IIOException iioe) {
             // Browser has closed the connection, so the HTTP OutputStream is closed
             // Silently catch the exception to avoid annoying log
diff --git a/src/main/java/net/sourceforge/plantuml/servlet/UmlDiagramService.java b/src/main/java/net/sourceforge/plantuml/servlet/UmlDiagramService.java
index 21a76d4..a90f178 100644
--- a/src/main/java/net/sourceforge/plantuml/servlet/UmlDiagramService.java
+++ b/src/main/java/net/sourceforge/plantuml/servlet/UmlDiagramService.java
@@ -47,6 +47,7 @@ public abstract class UmlDiagramService extends HttpServlet {
 
         // build the UML source from the compressed request parameter
         final String[] sourceAndIdx = getSourceAndIdx(request);
+        final int idx = Integer.parseInt(sourceAndIdx[1]);
         final String uml;
         try {
             uml = UmlExtractor.getUmlSource(sourceAndIdx[0]);
@@ -56,16 +57,7 @@ public abstract class UmlDiagramService extends HttpServlet {
             return;
         }
 
-        // generate the response
-        DiagramResponse dr = new DiagramResponse(response, getOutputFormat(), request);
-        final int idx = Integer.parseInt(sourceAndIdx[1]);
-        try {
-            dr.sendDiagram(uml, idx, false);
-        } catch (IIOException iioe) {
-            // Browser has closed the connection, so the HTTP OutputStream is closed
-            // Silently catch the exception to avoid annoying log
-        }
-        dr = null;
+        doDiagramResponse(request, response, uml, idx);
     }
 
     @Override
@@ -73,7 +65,7 @@ public abstract class UmlDiagramService extends HttpServlet {
 
         // build the UML source from the compressed request parameter
         final String[] sourceAndIdx = getSourceAndIdx(request);
-//        final String uml;
+        final int idx = Integer.parseInt(sourceAndIdx[1]);
 
         final StringBuilder uml = new StringBuilder();
         final BufferedReader in = request.getReader();
@@ -85,11 +77,20 @@ public abstract class UmlDiagramService extends HttpServlet {
             uml.append(line).append('\n');
         }
 
+        doDiagramResponse(request, response, uml.toString(), idx);
+    }
+
+    private void doDiagramResponse(
+        HttpServletRequest request,
+        HttpServletResponse response,
+        String uml,
+        int idx)
+        throws IOException {
+
         // generate the response
         DiagramResponse dr = new DiagramResponse(response, getOutputFormat(), request);
-        final int idx = Integer.parseInt(sourceAndIdx[1]);
         try {
-            dr.sendDiagram(uml.toString(), idx, true);
+            dr.sendDiagram(uml, idx);
         } catch (IIOException iioe) {
             // Browser has closed the connection, so the HTTP OutputStream is closed
             // Silently catch the exception to avoid annoying log