diff --git a/source/discovery/carla-discovery.cpp b/source/discovery/carla-discovery.cpp
index 6dbf9e195..3d07a3e10 100644
--- a/source/discovery/carla-discovery.cpp
+++ b/source/discovery/carla-discovery.cpp
@@ -1636,6 +1636,9 @@ int main(int argc, char* argv[])
 
     const ScopedWorkingDirSet swds(filename);
 
+    CarlaString filenameStr(filename);
+    filenameStr.toLower();
+
     bool openLib = false;
     void* handle = nullptr;
 
@@ -1660,9 +1663,6 @@ int main(int argc, char* argv[])
             return 1;
         }
 
-        CarlaString filenameStr(filename);
-        filenameStr.toLower();
-
         if (filenameStr.contains("fluidsynth", true))
         {
             DISCOVERY_OUT("info", "skipping fluidsynth based plugin");