diff --git a/nlp b/nlp
index 47b0388..4af40c1 100755
--- a/nlp
+++ b/nlp
@@ -128,9 +128,8 @@ def collect_jobs(input_dir, output_dir):
     jobs = []
     for file in os.listdir(input_dir):
         if os.path.isdir(os.path.join(input_dir, file)):
-            jobs += collect_jobs(os.path.join(input_dir, file),
-                                 os.path.join(output_dir, file))
-        elif file.lower().endswith('.txt'):
+            continue
+        if file.lower().endswith('.txt'):
             job = NLPPipelineJob(os.path.join(input_dir, file),
                                  os.path.join(output_dir, file))
             jobs.append(job)