diff --git a/ext/sockets/sockets.c b/ext/sockets/sockets.c
index 4b269d8cb0d4d..fb7b464c31b39 100644
--- a/ext/sockets/sockets.c
+++ b/ext/sockets/sockets.c
@@ -2251,7 +2251,7 @@ PHP_FUNCTION(socket_export_stream)
 	php_socket *socket;
 	php_stream *stream = NULL;
 	php_netstream_data_t *stream_data;
-	char *protocol = NULL;
+	const char *protocol = NULL;
 	size_t protocollen = 0;
 
 	if (zend_parse_parameters(ZEND_NUM_ARGS(), "O", &zsocket, socket_ce) == FAILURE) {
@@ -2287,12 +2287,12 @@ PHP_FUNCTION(socket_export_stream)
 			if (protoid == IPPROTO_TCP)
 #endif
 			{
-				protocol = "tcp";
-				protocollen = 3;
+				protocol = "tcp://";
+				protocollen = sizeof("tcp://") - 1;
 			}
 		} else if (protoid == SOCK_DGRAM) {
-			protocol = "udp";
-			protocollen = 3;
+			protocol = "udp://";
+			protocollen = sizeof("udp://") - 1;
 		}
 #ifdef PF_UNIX
 	} else if (socket->type == PF_UNIX) {
@@ -2302,11 +2302,11 @@ PHP_FUNCTION(socket_export_stream)
 		getsockopt(socket->bsd_socket, SOL_SOCKET, SO_TYPE, (char *) &type, &typelen);
 
 		if (type == SOCK_STREAM) {
-			protocol = "unix";
-			protocollen = 4;
+			protocol = "unix://";
+			protocollen = sizeof("unix://") - 1;
 		} else if (type == SOCK_DGRAM) {
-			protocol = "udg";
-			protocollen = 3;
+			protocol = "udg://";
+			protocollen = sizeof("udg://") - 1;
 		}
 #endif
 	}
diff --git a/ext/sockets/tests/bug-export-proto.phpt b/ext/sockets/tests/bug-export-proto.phpt
new file mode 100644
index 0000000000000..86e8b8e496e18
--- /dev/null
+++ b/ext/sockets/tests/bug-export-proto.phpt
@@ -0,0 +1,12 @@
+--TEST--
+Bug - socket_export_stream() with wrong proto
+--EXTENSIONS--
+sockets
+--FILE--
+<?php
+$sock = socket_create(AF_INET, SOCK_DGRAM, 0);
+$stream = socket_export_stream($sock);
+echo stream_get_meta_data($stream)['stream_type']. "\n";
+?>
+--EXPECT--
+udp_socket