diff --git a/tools/build.py b/tools/build.py
index 79a84a66b..4e3d13600 100755
--- a/tools/build.py
+++ b/tools/build.py
@@ -289,7 +289,7 @@ def _conan_install_for_config(self, config: str, api: ConanAPI, remotes: list):
         print_graph_packages(graph)
 
         api.install.install_binaries(graph, remotes)
-        api.install.install_consumer(graph, source_folder=Path.cwd())
+        api.install.install_consumer(graph, str(source_folder=Path.cwd()))
             
 
     def _run(self: 'Routines', command: typing.List[str]) -> None:
@@ -408,4 +408,4 @@ def main():
     try:
         main()
     except KeyboardInterrupt:
-        print('exited by user')
\ No newline at end of file
+        print('exited by user')