diff --git a/lang/py3-pyme/examples/sign.py b/lang/py3-pyme/examples/sign.py
index a0572fcc..5667cc2b 100755
--- a/lang/py3-pyme/examples/sign.py
+++ b/lang/py3-pyme/examples/sign.py
@@ -22,10 +22,10 @@ from pyme.constants.sig import mode
 
 core.check_version(None)
 
-plain = core.Data("Test message")
+plain = core.Data(b"Test message")
 sig = core.Data()
 c = core.Context()
-c.set_passphrase_cb(callbacks.passphrase_stdin, 'for signing')
+c.set_passphrase_cb(callbacks.passphrase_stdin, b'for signing')
 c.op_sign(plain, sig, mode.CLEAR)
 sig.seek(0,0)
 print(sig.read())
diff --git a/lang/py3-pyme/examples/signverify.py b/lang/py3-pyme/examples/signverify.py
index e2f80357..f8804ca9 100755
--- a/lang/py3-pyme/examples/signverify.py
+++ b/lang/py3-pyme/examples/signverify.py
@@ -25,10 +25,10 @@ from pyme.constants.sig import mode
 
 core.check_version(None)
 
-plain = core.Data("Test message")
+plain = core.Data(b"Test message")
 sig = core.Data()
 c = core.Context()
-user = "joe@example.org"
+user = b"joe@example.org"
 
 c.signers_clear()
 # Add joe@example.org's keys in the list of signers
@@ -41,7 +41,7 @@ if not c.signers_enum(0):
 
 # This is a map between signer e-mail and its password
 passlist = {
-    "<joe@example.org>": "Crypt0R0cks"
+    b"<joe@example.org>": b"Crypt0R0cks"
     }
     
 # callback will return password based on the e-mail listed in the hint.
diff --git a/lang/py3-pyme/examples/t-edit.py b/lang/py3-pyme/examples/t-edit.py
index 24d36d32..6c533429 100644
--- a/lang/py3-pyme/examples/t-edit.py
+++ b/lang/py3-pyme/examples/t-edit.py
@@ -51,7 +51,7 @@ else:
     c = Context()
     c.set_passphrase_cb(lambda x,y,z: "abc")
     out = Data()
-    c.op_keylist_start("Alpha", 0)
+    c.op_keylist_start(b"Alpha", 0)
     key = c.op_keylist_next()
     c.op_edit(key, KeyEditor().edit_fnc, out, out)
     print("[-- Last response --]")
diff --git a/lang/py3-pyme/examples/verifydetails.py b/lang/py3-pyme/examples/verifydetails.py
index 8784487e..0d47ba54 100755
--- a/lang/py3-pyme/examples/verifydetails.py
+++ b/lang/py3-pyme/examples/verifydetails.py
@@ -86,13 +86,13 @@ def main():
         sys.exit(1)
 
     if argc == 2:
-        print("trying to verify file: " + sys.argv[1])
-        verifyprintdetails(sys.argv[1])
+        print("trying to verify file: " + sys.argv[1].encode('utf-8'))
+        verifyprintdetails(sys.argv[1].encode('utf-8'))
     if argc == 3:
         print("trying to verify signature %s for file %s" \
-                    % (sys.argv[1], sys.argv[2]))
+                    % (sys.argv[1].encode('utf-8'), sys.argv[2].encode('utf-8')))
 
-        verifyprintdetails(sys.argv[1], sys.argv[2])
+        verifyprintdetails(sys.argv[1].encode('utf-8'), sys.argv[2].encode('utf-8'))
 
 if __name__ == "__main__":
     main()