diff --git a/software/caddy-frontend/test/test.py b/software/caddy-frontend/test/test.py
index 6ee8ed89fbc6c45779dffaf8b7eea326dce5884b..be5575f3d19fbdafce5578131f2700de87518a11 100644
--- a/software/caddy-frontend/test/test.py
+++ b/software/caddy-frontend/test/test.py
@@ -213,6 +213,9 @@ class TestDataMixin(object):
 
 
 class HttpFrontendTestCase(SlapOSInstanceTestCase):
+  # show full diffs, as it is required for proper analysis of problems
+  maxDiff = None
+
   @classmethod
   def getSoftwareURLList(cls):
     return [os.path.realpath(os.environ['TEST_SR'])]