diff --git a/.travis.yml b/.travis.yml
index f95ceb24..1b199113 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,3 +1,5 @@
+sudo: required
+dist: trusty
 language: java
 before_install:
   - sudo apt-get -qq update
diff --git a/docs-core/src/test/java/com/sismics/docs/core/util/TestFileUtil.java b/docs-core/src/test/java/com/sismics/docs/core/util/TestFileUtil.java
index bf3bb1de..8ce18dc4 100644
--- a/docs-core/src/test/java/com/sismics/docs/core/util/TestFileUtil.java
+++ b/docs-core/src/test/java/com/sismics/docs/core/util/TestFileUtil.java
@@ -97,10 +97,9 @@ public class TestFileUtil {
             File file4 = new File();
             file4.setId("document_odt");
             file4.setMimeType(MimeType.OPEN_DOCUMENT_TEXT);
-            
-            try (InputStream pdfInputStream = PdfUtil.convertToPdf(documentDto, Lists.newArrayList(file0, file1, file2, file3, file4), true, true, 10)) {
-                ByteStreams.copy(pdfInputStream, System.out);
-            }
+
+            InputStream is = PdfUtil.convertToPdf(documentDto, Lists.newArrayList(file0, file1, file2, file3, file4), true, true, 10);
+            is.close();
         }
     }
 }