diff --git a/cd.sh b/cd.sh
index 804d963..8c7e9c9 100644
--- a/cd.sh
+++ b/cd.sh
@@ -635,8 +635,9 @@ local variable="${1}"
 }
 
 cd_install_package () {
-    if [ "${1}" ] ; then
-        ${CD_PM_INSTALL} "${1}" || exit
+    cd_install_package__name="${1}"
+    if [ "${cd_install_package__name}" ] ; then
+        ${CD_PM_INSTALL} "${cd_install_package__name}" || exit
     fi
 }