diff --git a/barrOs_library.py b/barrOs_library.py
index b5936608da0203cb918f689dd4936b9ef70e4c3b..b47c212e7bb96817cb7385ced5c7124d3baeed51 100644
--- a/barrOs_library.py
+++ b/barrOs_library.py
@@ -719,7 +719,7 @@ def get_secondary_structure(pdb_file):
 
         run_dssp = sp.Popen(['mkdssp', '-i', pdb_file, '-o', out_file], stdout=sp.PIPE, stderr=sp.PIPE, stdin=sp.PIPE)
         stdout, stderr = run_dssp.communicate() 
-        print(stdout)
+        print(stderr)
         if len(stderr) > 0:
             run_dssp = sp.Popen(['dssp', '-i', pdb_file, '-o', out_file], stdout=sp.PIPE, stderr=sp.PIPE, stdin=sp.PIPE)
             stdout, stderr = run_dssp.communicate()