diff --git a/tests-ng/import.sh b/tests-ng/import.sh
index b9fd81b..c71972a 100755
--- a/tests-ng/import.sh
+++ b/tests-ng/import.sh
@@ -114,10 +114,10 @@ cd ${ddpath} | ${bin} install -f -c ${cfg} -p p1 -V
 [ ! -e ${tmpd}/def ] && exit 1
 [ ! -e ${tmpd}/xyz ] && exit 1
 [ ! -e ${tmpd}/dyn ] && exit 1
-grep 'abc' ${tmpd}/abc
-grep 'def' ${tmpd}/def
-grep 'xyz' ${tmpd}/xyz
-grep 'dyn' ${tmpd}/dyn
+grep 'abc' ${tmpd}/abc >/dev/null 2>&1
+grep 'def' ${tmpd}/def >/dev/null 2>&1
+grep 'xyz' ${tmpd}/xyz >/dev/null 2>&1
+grep 'dyn' ${tmpd}/dyn >/dev/null 2>&1
 
 ## CLEANING
 rm -rf ${tmps} ${tmpd}
diff --git a/tests/helpers.py b/tests/helpers.py
index 13b712d..ff65799 100644
--- a/tests/helpers.py
+++ b/tests/helpers.py
@@ -14,7 +14,7 @@ from dotdrop.options import Options
 from dotdrop.linktypes import LinkTypes
 from dotdrop.utils import strip_home
 
-TMPSUFFIX = '.dotdrop'
+TMPSUFFIX = '-dotdrop-tests'
 
 
 def clean(path):
@@ -33,12 +33,12 @@ def get_string(length):
     """Get a random string of length 'length'"""
     alpha = string.ascii_uppercase + string.digits
     temp = ''.join(random.choice(alpha) for _ in range(length))
-    return 'dotdrop-tests-{}'.format(temp)
+    return 'tmp.{}{}'.format(temp, TMPSUFFIX)
 
 
 def get_tempdir():
     """Get a temporary directory"""
-    return tempfile.mkdtemp(prefix='dotdrop-tests-')
+    return tempfile.mkdtemp(suffix=TMPSUFFIX)
 
 
 def create_random_file(directory, content=None,