diff --git a/vasl_templates/webapp/tests/control_tests_servicer.py b/vasl_templates/webapp/tests/control_tests_servicer.py
index e9e8c40..fd27495 100644
--- a/vasl_templates/webapp/tests/control_tests_servicer.py
+++ b/vasl_templates/webapp/tests/control_tests_servicer.py
@@ -496,8 +496,9 @@ class ControlTestsServicer( BaseControlTestsServicer ): #pylint: disable=too-man
             if request.HasField( val_type ):
                 key, val = request.key, getattr(request,val_type)
                 _logger.debug( "- Setting app config: %s = %s (%s)", key, str(val), type(val).__name__ )
-                if val == "{{TEMP_DIR}}":
-                    val = self._temp_dir.name
+                if isinstance( val, str ):
+                    val = val.replace( "{{TEMP_DIR}}", self._temp_dir.name ) \
+                             .replace( "{{FIXTURES_DIR}}", _FIXTURES_DIR )
                 self._webapp.config[ key ] = val
                 return Empty()
         raise RuntimeError( "Can't find app config key." )
diff --git a/vasl_templates/webapp/tests/test_aslrb2.py b/vasl_templates/webapp/tests/test_aslrb2.py
index f6acd5e..feb2ef1 100644
--- a/vasl_templates/webapp/tests/test_aslrb2.py
+++ b/vasl_templates/webapp/tests/test_aslrb2.py
@@ -1,7 +1,5 @@
 """ Test integration with asl-rulebook2. """
 
-import os
-
 from vasl_templates.webapp.tests.utils import init_webapp, find_child, find_children
 from vasl_templates.webapp.tests.test_scenario_persistence import load_scenario
 
@@ -12,7 +10,7 @@ def test_chapter_h( webapp, webdriver ):
 
     # initialize
     webapp.control_tests.set_app_config_val( "ASL_RULEBOOK2_BASE_URL",
-        os.path.join( os.path.dirname(__file__), "fixtures/asl-rulebook2/vo-note-targets.json" )
+        "{{FIXTURES_DIR}}/asl-rulebook2/vo-note-targets.json"
     )
     init_webapp( webapp, webdriver, scenario_persistence=1 )
     base_url = "{}/asl-rulebook2/".format( webapp.base_url )