diff --git a/default.inc b/default.inc
index 79f4016..ab8fbf6 100755
--- a/default.inc
+++ b/default.inc
@@ -61,6 +61,7 @@ redhat_derivative () {
 
 detect_os () {
 	#local -n __resultvar="$1" || return 1
+	declare -A __resultvar
 	__resultvar[MACH]=`uname -m`
 	if [ -f /etc/redhat-release ] ; then
 		echo DISTRIBUTION=redhat