diff --git a/reactor-api/src/main/java/org/reactor/response/renderer/simple/SimpleReactorResponseRenderer.java b/reactor-api/src/main/java/org/reactor/response/renderer/simple/SimpleReactorResponseRenderer.java
index f187055..f0c7779 100644
--- a/reactor-api/src/main/java/org/reactor/response/renderer/simple/SimpleReactorResponseRenderer.java
+++ b/reactor-api/src/main/java/org/reactor/response/renderer/simple/SimpleReactorResponseRenderer.java
@@ -1,13 +1,13 @@
 package org.reactor.response.renderer.simple;
 
 import static com.google.common.base.Strings.isNullOrEmpty;
-import static com.google.common.collect.Maps.newHashMap;
+import static com.google.common.collect.ArrayListMultimap.create;
 import static java.lang.String.format;
 
 import java.io.PrintWriter;
 import java.io.Writer;
-import java.util.Map;
 
+import com.google.common.collect.Multimap;
 import org.reactor.response.list.ListElementFormatter;
 import org.reactor.response.renderer.AbstractAutoFlushableResponseRenderer;
 
@@ -19,7 +19,7 @@ public class SimpleReactorResponseRenderer extends AbstractAutoFlushableResponse
     private static final String PROPERTY_LIST = "list";
 
     private String header;
-    private Map<String, String> responseElements = newHashMap();
+    private Multimap<String, String> responseElements = create();
 
     @Override
     public void renderHeadLine(String headerTemplateToBeRendered, Object... templateParameters) {
diff --git a/reactor-api/src/test/java/org/reactor/response/renderer/simple/SimpleReactorResponseRendererTest.java b/reactor-api/src/test/java/org/reactor/response/renderer/simple/SimpleReactorResponseRendererTest.java
index 4f19152..88f5a3c 100644
--- a/reactor-api/src/test/java/org/reactor/response/renderer/simple/SimpleReactorResponseRendererTest.java
+++ b/reactor-api/src/test/java/org/reactor/response/renderer/simple/SimpleReactorResponseRendererTest.java
@@ -29,6 +29,8 @@ public class SimpleReactorResponseRendererTest extends AbstractUnitTest {
     private static final String DOUBLE_LINE_2 = "doubleLine2";
     private static final double DOUBLE_VALUE_1 = 1.1d;
     private static final double DOUBLE_VALUE_2 = 2.2d;
+    private static final double DOUBLE_VALUE_3 = 3.3d;
+    private static final double DOUBLE_VALUE_4 = 4.4d;
 
     @Test
     public void shouldPrintHeaderIfNotNull() {
@@ -71,6 +73,9 @@ public void shouldHaveAllEntriesPrintedOut() {
         responseRenderer.renderTextLine(TEXT_LINE_2, TEXT_VALUE_2);
         responseRenderer.renderDoubleLine(DOUBLE_LINE_1, DOUBLE_VALUE_1);
         responseRenderer.renderDoubleLine(DOUBLE_LINE_2, DOUBLE_VALUE_2);
+        responseRenderer.renderDoubleLine(DOUBLE_VALUE_3);
+        responseRenderer.renderDoubleLine(DOUBLE_VALUE_4);
+
 
         // and after commit to writer
         StringWriter writer = spy(new StringWriter());
@@ -83,6 +88,8 @@ public void shouldHaveAllEntriesPrintedOut() {
         verify(writer).write(TEXT_VALUE_2, 0, TEXT_VALUE_2.length());
         verify(writer).write(Double.toString(DOUBLE_VALUE_1), 0, Double.toString(DOUBLE_VALUE_1).length());
         verify(writer).write(Double.toString(DOUBLE_VALUE_2), 0, Double.toString(DOUBLE_VALUE_2).length());
+        verify(writer).write(Double.toString(DOUBLE_VALUE_3), 0, Double.toString(DOUBLE_VALUE_3).length());
+        verify(writer).write(Double.toString(DOUBLE_VALUE_4), 0, Double.toString(DOUBLE_VALUE_4).length());
     }
 
     @Test