1 files changed, 3 insertions, 1 deletions
diff --git a/msec.csh b/msec.csh
index 137ed2e..3c03754 100755
--- a/msec.csh
+++ b/msec.csh
@@ -61,6 +61,8 @@ if ( ${?HISTFILESIZE} ) then
     set history=$HISTFILESIZE
 endif
 
-setenv SECURE_LEVEL ${SECURE_LEVEL}
+if ( ${?SECURE_LEVEL} ) then
+    setenv SECURE_LEVEL ${SECURE_LEVEL}
+endif
 
 # msec.csh ends here