diff --git a/lldb/test/Shell/helper/toolchain.py b/lldb/test/Shell/helper/toolchain.py
index 99e04b2b6e35..64a0c6671516 100644
--- a/lldb/test/Shell/helper/toolchain.py
+++ b/lldb/test/Shell/helper/toolchain.py
@@ -72,8 +72,7 @@ def use_lldb_substitutions(config):
     _disallow(config, 'debugserver')
     _disallow(config, 'platformserver')
 
-    llvm_config.add_tool_substitutions(primary_tools,
-                                       [config.lldb_tools_dir])
+    llvm_config.add_tool_substitutions(primary_tools, [config.lldb_tools_dir])
 
 def _use_msvc_substitutions(config):
     # If running from a Visual Studio Command prompt (e.g. vcvars), this will
@@ -169,4 +168,4 @@ def use_lldb_repro_substitutions(config, mode):
             command=FindTool('lldb-repro'),
             extra_args=[mode, '-S', lldb_init]),
     ]
-    llvm_config.add_tool_substitutions(substitutions)
+    llvm_config.add_tool_substitutions(substitutions, [config.lldb_tools_dir])