diff --git a/scripts/ocsp-stapling-with-ca-as-responder.test b/scripts/ocsp-stapling-with-ca-as-responder.test
index ecca2b982..5ae2ef106 100755
--- a/scripts/ocsp-stapling-with-ca-as-responder.test
+++ b/scripts/ocsp-stapling-with-ca-as-responder.test
@@ -154,7 +154,7 @@ cleanup()
     exit_status=$?
     for i in $(jobs -pr)
     do
-        kill -s HUP "$i"
+        kill -s kill "$i"
     done
     remove_ready_file
     rm $CERT_DIR/$test_cnf
diff --git a/scripts/ocsp-stapling.test b/scripts/ocsp-stapling.test
index a7e535fbf..7c295a0e2 100755
--- a/scripts/ocsp-stapling.test
+++ b/scripts/ocsp-stapling.test
@@ -165,7 +165,7 @@ cleanup()
     exit_status=$?
     for i in $(jobs -pr)
     do
-        kill -s HUP "$i"
+        kill -s KILL "$i"
     done
     remove_ready_file
     rm $CERT_DIR/$test_cnf
diff --git a/scripts/ocsp-stapling2.test b/scripts/ocsp-stapling2.test
index 0ec37b25a..61f9bc763 100755
--- a/scripts/ocsp-stapling2.test
+++ b/scripts/ocsp-stapling2.test
@@ -191,7 +191,7 @@ cleanup()
     exit_status=$?
     for i in $(jobs -pr)
     do
-        kill -s HUP "$i"
+        kill -s KILL "$i"
     done
     remove_ready_file
     rm $CERT_DIR/$test_cnf