diff --git a/sys/contrib/pf/net/pf_if.c b/sys/contrib/pf/net/pf_if.c
index a78a5452532e..156fb22a7315 100644
--- a/sys/contrib/pf/net/pf_if.c
+++ b/sys/contrib/pf/net/pf_if.c
@@ -663,7 +663,7 @@ pfi_address_add(struct sockaddr *sa, int af, int net)
 			    "(%d/%d)\n", pfi_buffer_cnt, PFI_BUFFER_MAX);
 			return;
 		}
-		memcpy(pfi_buffer, p, pfi_buffer_cnt * sizeof(*pfi_buffer));
+		memcpy(p, pfi_buffer, pfi_buffer_max * sizeof(*pfi_buffer));
 		/* no need to zero buffer */
 		free(pfi_buffer, PFI_MTYPE);
 		pfi_buffer = p;