diff --git a/spcd.sh b/spcd.sh
index c6870ad..d2fe8f7 100644
--- a/spcd.sh
+++ b/spcd.sh
@@ -797,7 +797,7 @@ spcd_install_packages() {
     spcd_install_package "rsync"
     # shell check
     spcd_substep "Install ShellCheck"
-    case "${SPCD_PM}" in
+    case "${SPCD_PF}" in
     "${SPCD_PF_RPM}")
         spcd_install_package "ShellCheck"
         ;;
@@ -808,7 +808,10 @@ spcd_install_packages() {
     case "${SPCD_OS_ID}" in
     "${SPCD_OS_ALMA}" | "${SPCD_OS_ROCKY}") ;;
     "${SPCD_OS_DEBIAN}")
-        [ "${SPCD_OS_VERSION}" != "bullseye" ] && spcd_install_package "shfmt"
+        case "${SPCD_OS_VERSION}" in
+        "bullseye") ;;
+        *) spcd_install_package "shfmt" ;;
+        esac
         ;;
     *) spcd_install_package "shfmt" ;;
     esac