diff -up ./src/Daemon/RuleSetFactory.cpp.orig ./src/Daemon/RuleSetFactory.cpp
--- ./src/Daemon/RuleSetFactory.cpp.orig	2020-08-11 11:10:00.924479577 +0200
+++ ./src/Daemon/RuleSetFactory.cpp	2020-08-11 11:12:56.447279841 +0200
@@ -74,7 +74,8 @@ namespace usbguard
           ruleSet.push_back(rs);
         }
       }
-      else if (ns.getRulesPath().empty()){
+
+      if (ruleSet.empty()){
         USBGUARD_LOG(Warning) << "RuleFile not set; Modification of the permanent policy won't be possible.";
         ruleSet = generateDefaultRuleSet();
       }