diff --git a/taiga/base/filters.py b/taiga/base/filters.py
index 25287800..986a0192 100644
--- a/taiga/base/filters.py
+++ b/taiga/base/filters.py
@@ -246,8 +246,11 @@ class QFilter(FilterBackend):
     def filter_queryset(self, request, queryset, view):
         q = request.QUERY_PARAMS.get('q', None)
         if q:
-            qs_args = [Q(subject__icontains=x) for x in q.split()]
-            qs_args += [Q(ref=x) for x in q.split() if x.isdigit()]
-            queryset = queryset.filter(reduce(operator.or_, qs_args))
+            if q.isdigit():
+                qs_args = [Q(ref=q)]
+            else:
+                qs_args = [Q(subject__icontains=x) for x in q.split()]
+
+            queryset = queryset.filter(reduce(operator.and_, qs_args))
 
         return queryset
diff --git a/tests/integration/test_issues.py b/tests/integration/test_issues.py
index b0b2f67a..a40cd418 100644
--- a/tests/integration/test_issues.py
+++ b/tests/integration/test_issues.py
@@ -69,3 +69,81 @@ def test_api_filter_by_subject(client):
 
     assert response.status_code == 200
     assert number_of_issues == 1, number_of_issues
+
+
+def test_api_filter_by_text_1(client):
+    f.create_issue()
+    issue = f.create_issue(subject="this is the issue one")
+    f.create_issue(subject="this is the issue two", owner=issue.owner)
+    url = reverse("issues-list") + "?q=one"
+
+    client.login(issue.owner)
+    response = client.get(url)
+    number_of_issues = len(response.data)
+
+    assert response.status_code == 200
+    assert number_of_issues == 1
+
+def test_api_filter_by_text_2(client):
+    f.create_issue()
+    issue = f.create_issue(subject="this is the issue one")
+    f.create_issue(subject="this is the issue two", owner=issue.owner)
+    url = reverse("issues-list") + "?q=this is the issue one"
+
+    client.login(issue.owner)
+    response = client.get(url)
+    number_of_issues = len(response.data)
+
+    assert response.status_code == 200
+    assert number_of_issues == 1
+
+def test_api_filter_by_text_3(client):
+    f.create_issue()
+    issue = f.create_issue(subject="this is the issue one")
+    f.create_issue(subject="this is the issue two", owner=issue.owner)
+    url = reverse("issues-list") + "?q=this is the issue"
+
+    client.login(issue.owner)
+    response = client.get(url)
+    number_of_issues = len(response.data)
+
+    assert response.status_code == 200
+    assert number_of_issues == 2
+
+def test_api_filter_by_text_4(client):
+    f.create_issue()
+    issue = f.create_issue(subject="this is the issue one")
+    f.create_issue(subject="this is the issue two", owner=issue.owner)
+    url = reverse("issues-list") + "?q=one two"
+
+    client.login(issue.owner)
+    response = client.get(url)
+    number_of_issues = len(response.data)
+
+    assert response.status_code == 200
+    assert number_of_issues == 0
+
+def test_api_filter_by_text_5(client):
+    f.create_issue()
+    issue = f.create_issue(subject="python 3")
+    url = reverse("issues-list") + "?q=python 3"
+
+    client.login(issue.owner)
+    response = client.get(url)
+    number_of_issues = len(response.data)
+
+    assert response.status_code == 200
+    assert number_of_issues == 1
+
+
+def test_api_filter_by_text_6(client):
+    f.create_issue()
+    issue = f.create_issue(subject="test")
+    url = reverse("issues-list") + "?q=%s"%(issue.ref)
+
+    client.login(issue.owner)
+    response = client.get(url)
+    number_of_issues = len(response.data)
+
+    assert response.status_code == 200
+    assert number_of_issues == 1