1 files changed, 3 insertions, 1 deletions
diff --git a/google/zip.h b/google/zip.h
index 6980d03..621f0d9 100644
--- a/google/zip.h
+++ b/google/zip.h
@@ -198,7 +198,9 @@ bool Unzip(const base::PlatformFile& zip_file,
            UnzipOptions options = {});
 
 // Unzips the contents of |zip_file| into |dest_dir|.
-// WARNING: This can overwrite existing files in |dest_dir|.
+// This function does not overwrite any existing file.
+// A filename collision will result in an error.
+// Therefore, |dest_dir| should initially be an empty directory.
 bool Unzip(const base::FilePath& zip_file,
            const base::FilePath& dest_dir,
            UnzipOptions options = {});