diff --git a/ivas_processing_scripts/generation/__init__.py b/ivas_processing_scripts/generation/__init__.py
index a07bd7331f193ffed3744d983257cee1dc1a42f2..8ee7c026d64269a0de0d7988b9df7ea5424a66e4 100755
--- a/ivas_processing_scripts/generation/__init__.py
+++ b/ivas_processing_scripts/generation/__init__.py
@@ -80,9 +80,9 @@ def main(args):
     # parse configuration
     cfg = config.TestConfig(args.config)
 
-    # create output directory, if not existing
-    if not os.path.exists(cfg.output_path):
-        create_dir(cfg.output_path)
+    # create output directories for categories
+    for cat in range(1, 7):
+        create_dir(cfg.output_path.joinpath(f"cat{cat}"))
 
     # set up logging
     logger = logging_init(args, cfg)