diff --git a/check_ssl_certs b/check_ssl_certs
index b9a64ed35a2403da6fc34a95fda846b6b1632961..a54dda99f5b00281d49af86f2a75c8539305ed25 100755
--- a/check_ssl_certs
+++ b/check_ssl_certs
@@ -94,9 +94,9 @@ ph.require openssl
 
 
 # --- override from command line params
-filelist=`ph.getValueWithParam $filelist f "$@"`
-iWarn=`   ph.getValueWithParam $iWarn    w "$@"`
-iCrit=`   ph.getValueWithParam $iCrit    c "$@"`
+filelist=`ph.getValueWithParam "$filelist" f "$@"`
+iWarn=`   ph.getValueWithParam $iWarn      w "$@"`
+iCrit=`   ph.getValueWithParam $iCrit      c "$@"`
 
 
 # ----- check cert files