diff --git a/package_linter.py b/package_linter.py
index 58d30be..c696fdc 100755
--- a/package_linter.py
+++ b/package_linter.py
@@ -812,6 +812,14 @@ class App(TestSuite):
         ):
             yield Error("Don't do black magic with /etc/ssowat/conf.json.persistent!")
 
+
+    @test()
+    def bad_final_path_location(self):
+        if os.system(f"grep -q -nr 'ynh_webpath_register' {self.path}/scripts/install 2>/dev/null") == 0 \
+          and os.system(f"grep -q -nr 'final_path=/opt' {self.path}/scripts/install  {self.path}/scripts/_common.sh 2>/dev/null") == 0:
+            yield Warning("Web applications are not supposed to be installed in /opt/ ... They are supposed to be installed in /var/www/$app :/")
+
+
     @test()
     def app_data_in_unofficial_dir(self):