diff --git a/utils/scanpypi b/utils/scanpypi
index 021c99a172..5a58550145 100755
--- a/utils/scanpypi
+++ b/utils/scanpypi
@@ -411,8 +411,8 @@ class BuildrootPackage():
                         for req in self.pkg_req]
 
         # get rid of commented lines and also strip the package strings
-        self.pkg_req = [item.strip() for item in self.pkg_req
-                        if len(item) > 0 and item[0] != '#']
+        self.pkg_req = {item.strip() for item in self.pkg_req
+                        if len(item) > 0 and item[0] != '#'}
 
         req_not_found = self.pkg_req
         self.pkg_req = list(map(pkg_buildroot_name, self.pkg_req))