diff --git a/alibuild_helpers/utilities.py b/alibuild_helpers/utilities.py
index f0b4b123..33dfacad 100644
--- a/alibuild_helpers/utilities.py
+++ b/alibuild_helpers/utilities.py
@@ -29,6 +29,10 @@ class SpecError(Exception):
 
 asList = lambda x : x if type(x) == list else [x]
 
+# This function is only needed to check the coverage of the testsuite
+# is really happening and we did not made a mistake in tox.ini
+def check_coverage():
+  return True
 
 def resolve_store_path(architecture, spec_hash):
   """Return the path where a tarball with the given hash is to be stored.
diff --git a/tests/test_coverage.py b/tests/test_coverage.py
new file mode 100644
index 00000000..4dfcfb37
--- /dev/null
+++ b/tests/test_coverage.py
@@ -0,0 +1,7 @@
+import unittest
+from alibuild_helpers.utilities import check_coverage
+
+class FooTest(unittest.TestCase):
+    def test_foo(self):
+        self.assertTrue(check_coverage())
+
diff --git a/tox.ini b/tox.ini
index ed710071..da3f14df 100644
--- a/tox.ini
+++ b/tox.ini
@@ -108,11 +108,13 @@ commands =
     coverage run --source={toxinidir} -a {toxinidir}/aliBuild init zlib
     touch zlib/foo
     coverage run --source={toxinidir} -a {toxinidir}/aliBuild -a {env:ARCHITECTURE} --no-system --disable GCC-Toolchain build zlib
+    coverage run --source={envsitepackagesdir} -a -m unittest discover {toxinidir}/tests
 
 [coverage:run]
 branch = True
-omit =
-    */.tox/*/lib/*
+include =
+    */alibuild*/*
+    */.tox/*/lib/*/alibuild_helpers/*
 
 [coverage:report]
 exclude_lines =