diff --git a/system/t12_api/__init__.py b/system/t12_api/__init__.py
index b09d27a0..c8ba5645 100644
--- a/system/t12_api/__init__.py
+++ b/system/t12_api/__init__.py
@@ -5,4 +5,5 @@ Testing aptly REST API
 from .repos import *
 from .files import *
 from .publish import *
-from .version import *
\ No newline at end of file
+from .version import *
+from .graph import *
diff --git a/system/t12_api/graph.py b/system/t12_api/graph.py
new file mode 100644
index 00000000..2f2a9f10
--- /dev/null
+++ b/system/t12_api/graph.py
@@ -0,0 +1,17 @@
+from api_lib import APITest
+
+
+class GraphAPITest(APITest):
+    """
+    GET /graph.:ext
+    """
+
+    def check(self):
+        resp = self.get("/api/graph.png")
+        self.check_equal(resp.headers["Content-Type"], "image/png")
+        self.check_equal(resp.content[:4], '\x89PNG')
+
+        self.check_equal(self.post("/api/repos", json={"Name": "xyz", "Comment": "fun repo"}).status_code, 201)
+        resp = self.get("/api/graph.svg")
+        self.check_equal(resp.headers["Content-Type"], "image/svg+xml")
+        self.check_equal(resp.content[:4], '<?xm')
diff --git a/system/t12_api/publish.py b/system/t12_api/publish.py
index 95379656..ae09bf26 100644
--- a/system/t12_api/publish.py
+++ b/system/t12_api/publish.py
@@ -45,7 +45,7 @@ class PublishAPITestRepo(APITest):
             'Storage': ''})
 
 
-class PublishSnapshotAPITestRepo(APITest):
+class PublishSnapshotAPITest(APITest):
     """
     POST /publish/:prefix/snapshot