diff --git a/waflib/extras/clang_cl.py b/waflib/extras/clang_cl.py
index 5adb3966..b167aa72 100644
--- a/waflib/extras/clang_cl.py
+++ b/waflib/extras/clang_cl.py
@@ -41,7 +41,7 @@ def get_llvm_paths(self):
 
 		llvm_dir, _ = Utils.winreg.QueryValueEx(llvm_key, '')
 		if llvm_dir:
-			llvm_path.append(os.path.join(llvm_dir, 'bin'))
+			llvm_path.append(os.path.join(llvm_dir.encode("utf-8"), 'bin'))
 
 	tmp = self.environ.get('LLVM_PATH') or self.env.LLVM_PATH
 	if tmp: