diff --git a/basicswap/ui/page_encryption.py b/basicswap/ui/page_encryption.py
index 55d2c58..581430b 100644
--- a/basicswap/ui/page_encryption.py
+++ b/basicswap/ui/page_encryption.py
@@ -45,7 +45,7 @@ def page_unlock(self, url_split, post_string):
     server = self.server
     swap_client = server.swap_client
 
-    messages = []
+    messages = ['Warning: This will unlock the system for all users!', ]
     err_messages = []
 
     form_data = self.checkForm(post_string, 'unlock', err_messages)
diff --git a/bin/basicswap_prepare.py b/bin/basicswap_prepare.py
index 699044f..c1863a0 100755
--- a/bin/basicswap_prepare.py
+++ b/bin/basicswap_prepare.py
@@ -24,6 +24,7 @@ import urllib.parse
 from urllib.request import urlretrieve
 
 import basicswap.config as cfg
+from basicswap import __version__
 from basicswap.base import getaddrinfo_tor
 from basicswap.basicswap import BasicSwap
 from basicswap.chainparams import Coins
@@ -884,8 +885,7 @@ def exitWithError(error_msg):
 
 
 def printVersion():
-    from basicswap import __version__
-    logger.info('Basicswap version: %s', __version__)
+    logger.info(f'Basicswap version: {__version__}')
 
     logger.info('Core versions:')
     for coin, version in known_coins.items():
@@ -1195,9 +1195,11 @@ def main():
     if bin_dir is None:
         bin_dir = os.path.join(data_dir, 'bin')
 
-    logger.info('datadir: %s', data_dir)
-    logger.info('bindir:  %s', bin_dir)
-    logger.info('Chain: %s', chain)
+    logger.info(f'BasicSwap prepare script {__version__}\n')
+    logger.info(f'Data dir: {data_dir}')
+    logger.info(f'Bin dir: {bin_dir}')
+    logger.info(f'Chain: {chain}')
+    logger.info('WALLET_ENCRYPTION_PWD is {}set'.format('not ' if WALLET_ENCRYPTION_PWD == '' else ''))
 
     if port_offset is None:
         port_offset = 300 if chain == 'testnet' else 0
diff --git a/doc/guix.md b/doc/guix.md
index a525f4b..a39f5ee 100644
--- a/doc/guix.md
+++ b/doc/guix.md
@@ -1,8 +1,9 @@
 ## Guix
 
 Start a development environment
+(openssl is included only to set SSL_CERTS_DIRS)
 
-    guix shell --pure -L. -D basicswap
+    guix shell --pure -L. openssl -D basicswap
 
 
 Run tests
@@ -15,7 +16,7 @@ Run tests
     pytest -vs tests/basicswap/test_run.py::Test::test_02_part_ltc
 
 
-Install package
+Install basicswap package
 
     guix package --install -L. basicswap