diff --git a/tools/testing/selftests/net/mptcp/mptcp_join.sh b/tools/testing/selftests/net/mptcp/mptcp_join.sh
index 67ca22856d54..a0584417bcab 100755
--- a/tools/testing/selftests/net/mptcp/mptcp_join.sh
+++ b/tools/testing/selftests/net/mptcp/mptcp_join.sh
@@ -3430,7 +3430,7 @@ userspace_tests()
 		chk_rm_nr 1 1 invert
 		chk_mptcp_info subflows 0 subflows 0
 		kill_events_pids
-		wait $tests_pid
+		mptcp_lib_kill_wait $tests_pid
 	fi
 
 	# userspace pm create destroy subflow
@@ -3449,7 +3449,7 @@ userspace_tests()
 		chk_rm_nr 1 1
 		chk_mptcp_info subflows 0 subflows 0
 		kill_events_pids
-		wait $tests_pid
+		mptcp_lib_kill_wait $tests_pid
 	fi
 }