diff --git a/scripts/99_software.sh b/scripts/99_software.sh
index b5c2539..0fa8d1d 100644
--- a/scripts/99_software.sh
+++ b/scripts/99_software.sh
@@ -28,7 +28,7 @@ param_check() {
     _parameter=$1
     _error_msg=$2
 
-    if [ -z "${p_arameter}" ] ; then
+    if [ -z "${_parameter}" ] ; then
         echo "error: ${_error_msg}" ; exit 1
     fi
 }