diff --git a/libexec/portzap/portzap-install b/libexec/portzap/portzap-install
index e223754..6294739 100755
--- a/libexec/portzap/portzap-install
+++ b/libexec/portzap/portzap-install
@@ -14,8 +14,8 @@ mode="u=rwX,g=rwX,o="
 perform_update()
 {
     rev=$(cat "${revfile}")
-    add=$(doas -u _portzap ${libexec}/git-changed-files "${gitdir}" "${rev}")
-    del=$(doas -u _portzap ${libexec}/git-removed-files "${gitdir}" "${rev}")
+    add=$(doas -u _portzap "${libexec}"/git-changed-files "${gitdir}" "${rev}")
+    del=$(doas -u _portzap "${libexec}"/git-removed-files "${gitdir}" "${rev}")
     for file in ${del}; do
         target="${installdir}/${file}"
         parent=$(dirname "${target}")
@@ -61,4 +61,4 @@ if [ -e "${revfile}" ]; then
 else
     perform_install
 fi
-doas -u _portzap ${libexec}/git-rev "${gitdir}" > "${revfile}"
+doas -u _portzap "${libexec}"/git-rev "${gitdir}" > "${revfile}"