diff --git a/NEWS b/NEWS
index 10f871cd..3f2233e9 100644
--- a/NEWS
+++ b/NEWS
@@ -62,6 +62,7 @@ NEWS
   * fix splitting of auth-ldap filter
   * workaround ldap connection leak if a ldap connection failed (restarting ldap)
   * fix auth.backend.ldap.bind-dn/pw problems (only read from global context for temporary ldap reconnects, thx ruskie)
+  * fix memleak in request header parsing (#1774, thx qhy)
 
 - 1.4.19 - 2008-03-10
 
diff --git a/src/request.c b/src/request.c
index 42988732..5a02aea8 100644
--- a/src/request.c
+++ b/src/request.c
@@ -825,6 +825,7 @@ int http_request_parse(server *srv, connection *con) {
 												"request-header:\n",
 												con->request.request);
 									}
+									array_insert_unique(con->request.headers, (data_unset *)ds);
 									return 0;
 								}
 
@@ -874,6 +875,7 @@ int http_request_parse(server *srv, connection *con) {
 												"request-header:\n",
 												con->request.request);
 									}
+									array_insert_unique(con->request.headers, (data_unset *)ds);
 									return 0;
 								}
 							} else if (cmp > 0 && 0 == (cmp = buffer_caseless_compare(CONST_BUF_LEN(ds->key), CONST_STR_LEN("Expect")))) {
@@ -911,6 +913,7 @@ int http_request_parse(server *srv, connection *con) {
 												"request-header:\n",
 												con->request.request);
 									}
+									array_insert_unique(con->request.headers, (data_unset *)ds);
 									return 0;
 								}
 							} else if (cmp > 0 && 0 == (cmp = buffer_caseless_compare(CONST_BUF_LEN(ds->key), CONST_STR_LEN("If-Modified-Since")))) {
@@ -936,6 +939,7 @@ int http_request_parse(server *srv, connection *con) {
 												"request-header:\n",
 												con->request.request);
 									}
+									array_insert_unique(con->request.headers, (data_unset *)ds);
 									return 0;
 								}
 							} else if (cmp > 0 && 0 == (cmp = buffer_caseless_compare(CONST_BUF_LEN(ds->key), CONST_STR_LEN("If-None-Match")))) {
@@ -953,6 +957,7 @@ int http_request_parse(server *srv, connection *con) {
 												"request-header:\n",
 												con->request.request);
 									}
+									array_insert_unique(con->request.headers, (data_unset *)ds);
 									return 0;
 								}
 							} else if (cmp > 0 && 0 == (cmp = buffer_caseless_compare(CONST_BUF_LEN(ds->key), CONST_STR_LEN("Range")))) {
@@ -976,6 +981,7 @@ int http_request_parse(server *srv, connection *con) {
 												"request-header:\n",
 												con->request.request);
 									}
+									array_insert_unique(con->request.headers, (data_unset *)ds);
 									return 0;
 								}
 							}