diff --git a/sys/netpfil/pf/pf.c b/sys/netpfil/pf/pf.c
index f785896f246..e2fb10c586a 100644
--- a/sys/netpfil/pf/pf.c
+++ b/sys/netpfil/pf/pf.c
@@ -1359,11 +1359,13 @@ keyattach:
 					s->timeout = PFTM_UNLINKED;
 					PF_HASHROW_UNLOCK(ih);
 					KEYS_UNLOCK();
-					uma_zfree(V_pf_state_key_z, skw);
-					if (skw != sks)
-						uma_zfree(V_pf_state_key_z, sks);
-					if (idx == PF_SK_STACK)
+					if (idx == PF_SK_WIRE) {
+						uma_zfree(V_pf_state_key_z, skw);
+						if (skw != sks)
+							uma_zfree(V_pf_state_key_z, sks);
+					} else {
 						pf_detach_state(s);
+					}
 					return (EEXIST); /* collision! */
 				}
 			}