diff --git a/tools/pico-hsm-tool.py b/tools/pico-hsm-tool.py
index 9df8763..93d001e 100755
--- a/tools/pico-hsm-tool.py
+++ b/tools/pico-hsm-tool.py
@@ -24,17 +24,17 @@ try:
     from smartcard.CardType import AnyCardType
     from smartcard.CardRequest import CardRequest
     from smartcard.Exceptions import CardRequestTimeoutException
-    from cvc.certificates import CVC
-except:
+except ModuleNotFoundError:
     print('ERROR: smarctard module not found! Install pyscard package.\nTry with `pip install pyscard`')
     sys.exit(-1)
 
 try:
+    from cvc.certificates import CVC
     from cvc.asn1 import ASN1
     from cvc.oid import oid2scheme
     from cvc.utils import scheme_rsa
     from cryptography.hazmat.primitives.asymmetric import ec
-except:
+except ModuleNotFoundError:
     print('ERROR: cvc module not found! Install pycvc package.\nTry with `pip install pycvc`')
     sys.exit(-1)
 import json