diff --git a/usr/libexec/security-misc/apt-get-update b/usr/libexec/security-misc/apt-get-update
index d645cf9..d5d4da0 100755
--- a/usr/libexec/security-misc/apt-get-update
+++ b/usr/libexec/security-misc/apt-get-update
@@ -21,9 +21,10 @@ sigterm_trap() {
    if [ "$lastpid" = "" ]; then
       exit 143
    fi
-   if kill -0 -- "$lastpid" &>/dev/null ; then
-      kill -s sigterm -- "$lastpid"
+   if ! kill -0 -- "$lastpid" &>/dev/null ; then
+      exit 143
    fi
+   kill -s sigterm -- "$lastpid"
    exit 143
 }