diff --git a/profile/flatpak.sh b/profile/flatpak.sh
index 395f93b8..4b88baf3 100644
--- a/profile/flatpak.sh
+++ b/profile/flatpak.sh
@@ -1,3 +1,4 @@
+# shellcheck shell=sh
 if command -v flatpak > /dev/null; then
     # set XDG_DATA_DIRS to include Flatpak installations