diff --git a/.travis.yml b/.travis.yml
index 8a9168c..5f93e2f 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -2,15 +2,19 @@ language: python
 
 cache: pip
 
+addons:
+  apt:
+    sources: [ 'ubuntu-toolchain-r-test' ]
+    packages:
+      - libstdc++6
+      - libfuzzy-dev
+
 python:
     - "2.7"
-    - "3.4"
     - "3.5"
     - "3.5-dev"
     - "3.6"
     - "3.6-dev"
-    - "3.7-dev"
-    - "nightly"
 
 install:
     - pip install -U nose
@@ -18,6 +22,7 @@ install:
     - pip install codecov
     - pip install requests-mock pytest
     - pip install https://github.com/lief-project/packages/raw/lief-master-latest/pylief-0.7.0.dev.zip
+    - pip install git+https://github.com/kbandla/pydeep.git
     - pip install python-magic
     - pip install .
     - pushd tests
diff --git a/pymisp/tools/create_misp_object.py b/pymisp/tools/create_misp_object.py
index 9e2d7fb..cb18cb0 100644
--- a/pymisp/tools/create_misp_object.py
+++ b/pymisp/tools/create_misp_object.py
@@ -2,6 +2,7 @@
 # -*- coding: utf-8 -*-
 
 from pymisp.tools import FileObject, PEObject, ELFObject, MachOObject, MISPObjectException
+import warnings
 
 try:
     import lief
@@ -55,15 +56,13 @@ def make_binary_objects(filepath):
             elif isinstance(lief_parsed, lief.MachO.Binary):
                 return make_macho_objects(lief_parsed, misp_file)
         except lief.bad_format as e:
-            # print('\tBad format: ', e)
-            pass
+            warnings.warn('\tBad format: ', e)
         except lief.bad_file as e:
-            # print('\tBad file: ', e)
-            pass
+            warnings.warn('\tBad file: ', e)
         except lief.parser_error as e:
-            # print('\tParser error: ', e)
-            pass
+            warnings.warn('\tParser error: ', e)
         except FileTypeNotImplemented as e:  # noqa
-            # print(e)
-            pass
+            warnings.warn(e)
+    else:
+        warnings.warn('Please install lief, documentation here: https://github.com/lief-project/LIEF')
     return misp_file, None, None