diff --git a/doc/contributor/howto-guide-adding-generated-libraries.md b/doc/contributor/howto-guide-adding-generated-libraries.md
index 1fe3a39322e25..9071a269a08f8 100644
--- a/doc/contributor/howto-guide-adding-generated-libraries.md
+++ b/doc/contributor/howto-guide-adding-generated-libraries.md
@@ -97,7 +97,7 @@ and add the new service.
 Find the list of `.proto` files that will need to be included:
 
 ```shell
-find "${bazel_output_base}/external/googleapis~/${subdir}" -name '*.proto' -print0 |
+find "${bazel_output_base}/external/googleapis+/${subdir}" -name '*.proto' -print0 |
   xargs -0 grep -l '^service'
 ```