diff --git a/docs-web/src/main/java/com/sismics/docs/rest/resource/FileResource.java b/docs-web/src/main/java/com/sismics/docs/rest/resource/FileResource.java
index 43e08aff..81ee815e 100644
--- a/docs-web/src/main/java/com/sismics/docs/rest/resource/FileResource.java
+++ b/docs-web/src/main/java/com/sismics/docs/rest/resource/FileResource.java
@@ -336,6 +336,7 @@ public class FileResource extends BaseResource {
             if (!storedfile.exists()) {
                 storedfile = new java.io.File(getClass().getResource("/image/file.png").getFile());
                 mimeType = MimeType.IMAGE_PNG;
+                decrypt = false;
             }
         } else {
             storedfile = Paths.get(DirectoryUtil.getStorageDirectory().getPath(), fileId).toFile();
diff --git a/docs-web/src/test/java/com/sismics/docs/rest/TestDocumentResource.java b/docs-web/src/test/java/com/sismics/docs/rest/TestDocumentResource.java
index 003f4b80..a4747a28 100644
--- a/docs-web/src/test/java/com/sismics/docs/rest/TestDocumentResource.java
+++ b/docs-web/src/test/java/com/sismics/docs/rest/TestDocumentResource.java
@@ -18,6 +18,8 @@ import org.junit.Test;
 import com.google.common.io.ByteStreams;
 import com.sismics.docs.core.util.DirectoryUtil;
 import com.sismics.docs.rest.filter.CookieAuthenticationFilter;
+import com.sismics.util.mime.MimeType;
+import com.sismics.util.mime.MimeTypeUtil;
 import com.sun.jersey.api.client.ClientResponse;
 import com.sun.jersey.api.client.ClientResponse.Status;
 import com.sun.jersey.api.client.WebResource;
@@ -296,6 +298,7 @@ public class TestDocumentResource extends BaseJerseyTest {
         Assert.assertEquals(Status.OK, Status.fromStatusCode(response.getStatus()));
         InputStream is = response.getEntityInputStream();
         byte[] fileBytes = ByteStreams.toByteArray(is);
+        Assert.assertEquals(MimeType.IMAGE_JPEG, MimeTypeUtil.guessMimeType(fileBytes));
         Assert.assertEquals(33691, fileBytes.length);
     }
 }
\ No newline at end of file