diff --git a/package_linter.py b/package_linter.py
index b366069..ac290a2 100755
--- a/package_linter.py
+++ b/package_linter.py
@@ -769,16 +769,16 @@ class App(TestSuite):
     @test()
     def config_panel(app):
 
-        if file_exists(app.path + "config_panel.json"):
+        if file_exists(app.path + "/config_panel.json"):
             yield Error(
                 "JSON config panels are not supported anymore, should be replaced by a toml version"
             )
 
-        if file_exists(app.path + "config_panel.toml"):
+        if file_exists(app.path + "/config_panel.toml"):
             if (
                 os.system(
                     "grep -q 'version = \"0.1\"' '%s'"
-                    % (app.path + "config_panel.toml")
+                    % (app.path + "/config_panel.toml")
                 )
                 == 0
             ):
@@ -800,7 +800,7 @@ class App(TestSuite):
             validate_schema(
                 "config_panel",
                 config_panel_v1_schema(),
-                toml.load(app.path + "config_panel.toml"),
+                toml.load(app.path + "/config_panel.toml"),
             )
 
     @test()
@@ -1218,7 +1218,7 @@ class Configurations(TestSuite):
                 )
             else:
                 validate_schema(
-                    "tests.toml", tests_v1_schema(), toml.load(app.path + "tests.toml")
+                    "tests.toml", tests_v1_schema(), toml.load(app.path + "/tests.toml")
                 )
 
     @test()