diff --git a/vlib/crypto/sha1/sha1.v b/vlib/crypto/sha1/sha1.v
index 4c70cbc39a..3532a6e95e 100644
--- a/vlib/crypto/sha1/sha1.v
+++ b/vlib/crypto/sha1/sha1.v
@@ -54,6 +54,7 @@ pub fn new() &Digest {
 	return d
 }
 
+[manualfree]
 pub fn (mut d Digest) write(p_ []byte) int {
 	nn := p_.len
 	unsafe {
diff --git a/vlib/net/urllib/urllib.v b/vlib/net/urllib/urllib.v
index 3a3cd5edcb..d5a74e76b1 100644
--- a/vlib/net/urllib/urllib.v
+++ b/vlib/net/urllib/urllib.v
@@ -451,6 +451,7 @@ fn parse_request_uri(rawurl string) ?URL {
 // via_request is true, the URL is assumed to have arrived via an HTTP request,
 // in which case only absolute URLs or path-absolute relative URLs are allowed.
 // If via_request is false, all forms of relative URLs are allowed.
+[manualfree]
 fn parse_url(rawurl string, via_request bool) ?URL {
 	if string_contains_ctl_byte(rawurl) {
 		return error(error_msg('parse_url: invalid control character in URL', rawurl))
diff --git a/vlib/x/websocket/handshake.v b/vlib/x/websocket/handshake.v
index 010f6f3009..0ec28d9392 100644
--- a/vlib/x/websocket/handshake.v
+++ b/vlib/x/websocket/handshake.v
@@ -1,3 +1,4 @@
+[manualfree]
 module websocket
 
 import encoding.base64
diff --git a/vlib/x/websocket/websocket_client.v b/vlib/x/websocket/websocket_client.v
index 927255899f..df3f7b083b 100644
--- a/vlib/x/websocket/websocket_client.v
+++ b/vlib/x/websocket/websocket_client.v
@@ -1,5 +1,6 @@
 // websocket module implements websocket client and a websocket server
 // attribution: @thecoderr the author of original websocket client
+[manualfree]
 module websocket
 
 import net
@@ -103,7 +104,9 @@ pub fn (mut ws Client) connect() ? {
 
 // listen listens and processes incoming messages
 pub fn (mut ws Client) listen() ? {
-	ws.logger.info('Starting client listener, server($ws.is_server)...')
+	mut log := 'Starting client listener, server($ws.is_server)...'
+	ws.logger.info(log)
+	log.free()
 	defer {
 		ws.logger.info('Quit client listener, server($ws.is_server)...')
 		if ws.state == .open {
@@ -125,7 +128,9 @@ pub fn (mut ws Client) listen() ? {
 		ws.debug_log('got message: $msg.opcode')
 		match msg.opcode {
 			.text_frame {
-				ws.debug_log('read: text')
+				log = 'read: text'
+				ws.debug_log(log)
+				log.free()
 				ws.send_message_event(msg)
 				unsafe { msg.free() }
 			}
@@ -157,7 +162,9 @@ pub fn (mut ws Client) listen() ? {
 				}
 			}
 			.close {
-				ws.debug_log('read: close')
+				log = 'read: close'
+				ws.debug_log(log)
+				log.free()
 				defer {
 					ws.manage_clean_close()
 				}
@@ -219,7 +226,7 @@ pub fn (mut ws Client) pong() ? {
 
 // write_ptr writes len bytes provided a byteptr with a websocket messagetype
 pub fn (mut ws Client) write_ptr(bytes byteptr, payload_len int, code OPCode) ? {
-	ws.debug_log('write_ptr code: $code')
+	// ws.debug_log('write_ptr code: $code')
 	if ws.state != .open || ws.conn.sock.handle < 1 {
 		// todo: send error here later
 		return error('trying to write on a closed socket!')
@@ -402,12 +409,14 @@ fn (mut ws Client) send_control_frame(code OPCode, frame_typ string, payload []b
 // parse_uri parses the url to a Uri
 fn parse_uri(url string) ?&Uri {
 	u := urllib.parse(url) ?
-	v := u.request_uri().split('?')
+	request_uri := u.request_uri()
+	v := request_uri.split('?')
 	mut port := u.port()
+	uri := u.str()
 	if port == '' {
-		port = if u.str().starts_with('ws://') {
+		port = if uri.starts_with('ws://') {
 			'80'
-		} else if u.str().starts_with('wss://') {
+		} else if uri.starts_with('wss://') {
 			'443'
 		} else {
 			u.port()