diff --git a/llvm/utils/prepare-code-coverage-artifact.py b/llvm/utils/prepare-code-coverage-artifact.py
index 9a51729186970..b865211088c8e 100755
--- a/llvm/utils/prepare-code-coverage-artifact.py
+++ b/llvm/utils/prepare-code-coverage-artifact.py
@@ -67,6 +67,7 @@ def prepare_html_report(
             "-o",
             report_dir,
             "-show-line-counts-or-regions",
+            "-show-directory-coverage",
             "-Xdemangler",
             "c++filt",
             "-Xdemangler",