diff --git a/ssh1bpp.c b/ssh1bpp.c
index a00c4d3c..5b0f119b 100644
--- a/ssh1bpp.c
+++ b/ssh1bpp.c
@@ -277,4 +277,6 @@ static void ssh1_bpp_format_packet(BinaryPacketProtocol *bpp, PktOut *pkt)
 
     bufchain_add(s->bpp.out_raw, pkt->data + pktoffs,
                  biglen + 4); /* len(length+padding+type+data+CRC) */
+
+    ssh_free_pktout(pkt);
 }
diff --git a/ssh2bpp-bare.c b/ssh2bpp-bare.c
index 270c0118..bdf49a21 100644
--- a/ssh2bpp-bare.c
+++ b/ssh2bpp-bare.c
@@ -157,4 +157,6 @@ static void ssh2_bare_bpp_format_packet(BinaryPacketProtocol *bpp, PktOut *pkt)
 
     PUT_32BIT(pkt->data, pkt->length - 4);
     bufchain_add(s->bpp.out_raw, pkt->data, pkt->length);
+
+    ssh_free_pktout(pkt);
 }
diff --git a/ssh2bpp.c b/ssh2bpp.c
index 11f5d08b..ef007024 100644
--- a/ssh2bpp.c
+++ b/ssh2bpp.c
@@ -610,4 +610,6 @@ static void ssh2_bpp_format_packet(BinaryPacketProtocol *bpp, PktOut *pkt)
     pkt->encrypted_len = origlen + padding;
 
     bufchain_add(s->bpp.out_raw, pkt->data, pkt->length);
+
+    ssh_free_pktout(pkt);
 }