diff --git a/sample_app.py b/sample_app.py
index 3e1ec78..f1c9e1c 100644
--- a/sample_app.py
+++ b/sample_app.py
@@ -5,7 +5,7 @@
 # Sample function created for demonstration of creating custom applications functionality
 # See also https://docs.cyfronet.pl/display/ISDOC/Creating+Custom+Applications
 
-import numpy as np
+#import numpy as np
 
 def main(numbers_file, multiplier):
     """