diff --git a/sys/netpfil/pf/pf.c b/sys/netpfil/pf/pf.c
index a35f9e4..33ea503 100644
--- a/sys/netpfil/pf/pf.c
+++ b/sys/netpfil/pf/pf.c
@@ -6145,6 +6145,8 @@ done:
 		action = PF_PASS;
 		break;
 	case PF_DROP:
+		if (*m0 == NULL)
+			action = PF_PASS;
 		m_freem(*m0);
 		*m0 = NULL;
 		break;
@@ -6545,6 +6547,8 @@ done:
 		action = PF_PASS;
 		break;
 	case PF_DROP:
+		if (*m0 == NULL)
+			action = PF_PASS;
 		m_freem(*m0);
 		*m0 = NULL;
 		break;