diff --git a/cddl/contrib/opensolaris/cmd/dtrace/test/tst/common/proc/tst.exitcore.ksh b/cddl/contrib/opensolaris/cmd/dtrace/test/tst/common/proc/tst.exitcore.ksh
index 59094e3da37f..1c23b2a0b9e0 100644
--- a/cddl/contrib/opensolaris/cmd/dtrace/test/tst/common/proc/tst.exitcore.ksh
+++ b/cddl/contrib/opensolaris/cmd/dtrace/test/tst/common/proc/tst.exitcore.ksh
@@ -61,7 +61,7 @@ EOF
 sleeper()
 {
 	while true; do
-		$longsleep &
+		limits -c unlimited $longsleep &
                 /bin/sleep 1
 		kill -SEGV $!
 	done