diff --git a/wsockd/wsockd.c b/wsockd/wsockd.c
index 59c429720..af38a574e 100644
--- a/wsockd/wsockd.c
+++ b/wsockd/wsockd.c
@@ -390,6 +390,7 @@ conn_mod_write_short_frame(conn_t * conn, void *data, int len)
 	ws_frame_hdr_t hdr;
 
 	ws_frame_set_opcode(&hdr, WEBSOCKET_OPCODE_BINARY_FRAME);
+	ws_frame_set_fin(&hdr, 1);
 	hdr.payload_length_mask = (len + 2) & 0x7f;
 
 	conn_mod_write(conn, &hdr, sizeof(hdr));
@@ -403,6 +404,7 @@ conn_mod_write_long_frame(conn_t * conn, void *data, int len)
 	ws_frame_ext_t hdr;
 
 	ws_frame_set_opcode(&hdr.header, WEBSOCKET_OPCODE_BINARY_FRAME);
+	ws_frame_set_fin(&hdr.header, 1);
 	hdr.header.payload_length_mask = 126;
 	hdr.payload_length_extended = htons(len + 2);