diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 0ee4d96..5a8741b 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -29,7 +29,11 @@ jobs:
          - name: install build deps
            run: brew update; brew install make pkg-config
          - name: make
-           run: sh build-osx.sh EXTRA_WARNINGS=-Werror clients curses
+           run: sh build-osx.sh EXTRA_WARNINGS=-Werror PREFIX=install clients curses
+         - name: make install
+           run: sh build-osx.sh PREFIX=install install
+         - name: print install tree
+           run: find install
          - name: check symbols
            run: sh build-osx.sh check-symbols