diff --git a/debuginfo-tests/dexter/dex/debugger/Debuggers.py b/debuginfo-tests/dexter/dex/debugger/Debuggers.py
--- a/debuginfo-tests/dexter/dex/debugger/Debuggers.py
+++ b/debuginfo-tests/dexter/dex/debugger/Debuggers.py
@@ -41,7 +41,7 @@
 
 
 def _warn_meaningless_option(context, option):
-    if context.options.list_debuggers:
+    if hasattr(context.options, 'list_debuggers'):
         return
 
     warn(context,
diff --git a/debuginfo-tests/dexter/dex/tools/test/Tool.py b/debuginfo-tests/dexter/dex/tools/test/Tool.py
--- a/debuginfo-tests/dexter/dex/tools/test/Tool.py
+++ b/debuginfo-tests/dexter/dex/tools/test/Tool.py
@@ -58,7 +58,7 @@
 
         if self.error:
             script_error = (' : {}'.format(
-                self.error.script_error.splitlines()[0].decode()) if getattr(
+                self.error.script_error.splitlines()[0]) if getattr(
                     self.error, 'script_error', None) else '')
 
             error = ' [{}{}]'.format(
diff --git a/debuginfo-tests/lit.cfg.py b/debuginfo-tests/lit.cfg.py
--- a/debuginfo-tests/lit.cfg.py
+++ b/debuginfo-tests/lit.cfg.py
@@ -104,7 +104,7 @@
                            'dexter', 'dexter.py')
 dexter_test_cmd = '"{}" "{}" test'.format(config.python3_executable, dexter_path)
 if lldb_path is not None:
-  dexter_test_cmd += ' --lldb-executable {}'.format(lldb_path)
+  dexter_test_cmd += ' --lldb-executable "{}"'.format(lldb_path)
 tools.append(ToolSubst('%dexter', dexter_test_cmd))
 
 # For testing other bits of dexter that aren't under the "test" subcommand,