diff --git a/utils/similarity/__main__.py b/utils/similarity/__main__.py
index c456ae0a9..2e2abd26c 100755
--- a/utils/similarity/__main__.py
+++ b/utils/similarity/__main__.py
@@ -5,13 +5,11 @@ import logging
 import sys
 import traceback
 import operator
-import numpy as np
 
 from .info     import info
 from .test     import test
 from .train    import train
 
-
 logging.basicConfig()
 logger = logging.getLogger("Slither")
 
@@ -19,7 +17,7 @@ slither_simil_usage = "USAGE" # TODO
 modes = ["info", "test", "train"]
 
 def parse_args():
-    parser = argparse.ArgumentParser(description='',
+    parser = argparse.ArgumentParser(description='Code similarity detection tool',
                                      usage=slither_simil_usage)
 
     parser.add_argument('mode',
diff --git a/utils/similarity/encode.py b/utils/similarity/encode.py
index 75e022f7a..f6ad95517 100644
--- a/utils/similarity/encode.py
+++ b/utils/similarity/encode.py
@@ -11,6 +11,8 @@ from slither.solc_parsing.variables.state_variable import *
 from slither.solc_parsing.variables.local_variable import *
 from slither.solc_parsing.variables.local_variable_init_from_tuple import *
 
+logger = logging.getLogger("Slither-simil")
+
 def load_contracts(dirname, ext=None):
     r = []
     walk = list(os.walk(dirname))
@@ -121,7 +123,6 @@ def encode_ir(ir):
     # default
     else:
         print(type(ir),"is missing encoding!")
-        #sys.exit(1)
         return ''
  
 def encode_contract(filename, solc):
@@ -131,7 +132,7 @@ def encode_contract(filename, solc):
     try: 
         slither = Slither(filename, solc=solc)
     except:
-        print("Compilation failed")
+        logger.error("Compilation failed")
         return r
 
     # Iterate over all the contracts
@@ -152,17 +153,11 @@ def encode_contract(filename, solc):
 
                 # Iterate over the nodes of the function
                 for node in function.nodes:
-
                     # Print the Solidity expression of the nodes
                     # And the SlithIR operations
                     if node.expression:
-
-                        #print('\tSolidity expression: {}'.format(node.expression))
-                        #print('\tSlithIR:')
                         for ir in node.irs:
-                            #print(ir)
                             r[x].append(encode_ir(ir))
-                            #print('\t\t\t{}'.format(ir))
     return r
 
 
diff --git a/utils/similarity/info.py b/utils/similarity/info.py
index 46625eabd..947d9b40b 100644
--- a/utils/similarity/info.py
+++ b/utils/similarity/info.py
@@ -6,7 +6,7 @@ from fastText import load_model
 from .encode import encode_contract
 
 logging.basicConfig()
-logger = logging.getLogger("Slither")
+logger = logging.getLogger("Slither-simil")
 
 def info(args):
 
diff --git a/utils/similarity/test.py b/utils/similarity/test.py
index 96a6e648e..1ea803546 100755
--- a/utils/similarity/test.py
+++ b/utils/similarity/test.py
@@ -10,7 +10,7 @@ from .encode import encode_contract, load_contracts
 from .cache import load_cache, save_cache
 from .similarity import similarity
 
-logger = logging.getLogger("crytic-pred")
+logger = logging.getLogger("Slither-simil")
 
 def test(args):
 
@@ -28,6 +28,9 @@ def test(args):
             sys.exit(-1)
 
         irs = encode_contract(filename,solc=solc)
+        if len(irs) == 0:
+            sys.exit(-1)
+
         x = "-".join([filename,contract,fname])
         y = " ".join(irs[x])
         
diff --git a/utils/similarity/train.py b/utils/similarity/train.py
index 83c7ea8bf..0d99963de 100755
--- a/utils/similarity/train.py
+++ b/utils/similarity/train.py
@@ -7,7 +7,7 @@ import operator
 from fastText import train_unsupervised
 from .encode import encode_contract, load_contracts
 
-logger = logging.getLogger("crytic-pred")
+logger = logging.getLogger("Slither-simil")
 
 def train(args):