diff --git a/impression/kill_cnpkmodule b/impression/kill_cnpkmodule
index ee27cec4..618f54bd 100755
--- a/impression/kill_cnpkmodule
+++ b/impression/kill_cnpkmodule
@@ -1,2 +1,2 @@
 #!/bin/sh
-ps aux | grep cnpkmodule | perl -nle '/[^\s]*\s*(\d*)\s*([^\s]*\s*){7}(?<a>\d*)/; if ($+{a} > 60) {kill $1; print "cnpkmodule was killed"}'
+ps aux | grep cnpkmodule | perl -nle '/[^\s]*\s*(\d*)\s*([^\s]*\s*){7}(\d*)/; if ($3 > 60) {kill $1; print "cnpkmodule was killed"}'