diff --git a/tests/fixtures.py b/tests/fixtures.py
index 01df94b26..10f870e38 100644
--- a/tests/fixtures.py
+++ b/tests/fixtures.py
@@ -164,8 +164,7 @@ def printCrashLog(node):
     errors, fname = getCrashLog(node)
     if errors:
         print("-" * 10, "{} (last 50 lines)".format(fname), "-" * 10)
-        for l in errors[-50:]:
-            print(l, end='')
+        print("".join(errors[-50:]))
         print("-" * 80)
     return 1 if errors else 0
 
diff --git a/tests/utils.py b/tests/utils.py
index b0f218b66..5aa6e25b3 100644
--- a/tests/utils.py
+++ b/tests/utils.py
@@ -679,10 +679,9 @@ class NodeFactory(object):
         if fake_bitcoin_cli:
             cli = os.path.join(lightning_dir, "fake-bitcoin-cli")
             with open(cli, "w") as text_file:
-                print("""#! /bin/sh
-                ! [ -f bitcoin-cli-fail ] || exit `cat bitcoin-cli-fail`
-                exec bitcoin-cli "$@"
-                """, file=text_file)
+                text_file.write('#! /bin/sh\n'
+                                '! [ -f bitcoin-cli-fail ] || exit `cat bitcoin-cli-fail`\n'
+                                'exec bitcoin-cli "$@"\n')
             os.chmod(cli, os.stat(cli).st_mode | stat.S_IEXEC)
             daemon.opts['bitcoin-cli'] = cli