diff --git a/source/src/client.cpp b/source/src/client.cpp
index 1d7d65f1..e407c517 100644
--- a/source/src/client.cpp
+++ b/source/src/client.cpp
@@ -556,12 +556,9 @@ void c2sinfo(playerent *d)                  // send update to the server
     lastupdate = totalmillis;
 }
 
-void sendintro()
+int getbuildtype()
 {
-    packetbuf p(MAXTRANS, ENET_PACKET_FLAG_RELIABLE);
-    putint(p, SV_CONNECT);
-    putint(p, AC_VERSION);
-    putint(p, (isbigendian() ? 0x80 : 0 )|(adler((unsigned char *)guns, sizeof(guns)) % 31 << 8)|
+    return (isbigendian() ? 0x80 : 0 )|(adler((unsigned char *)guns, sizeof(guns)) % 31 << 8)|
         #ifdef WIN32
             0x40 |
         #endif
@@ -574,7 +571,15 @@ void sendintro()
         #ifdef __GNUC__
             0x04 |
         #endif
-            0);
+            0;
+}
+
+void sendintro()
+{
+    packetbuf p(MAXTRANS, ENET_PACKET_FLAG_RELIABLE);
+    putint(p, SV_CONNECT);
+    putint(p, AC_VERSION);
+    putint(p, getbuildtype());
     sendstring(player1->name, p);
     sendstring(genpwdhash(player1->name, clientpassword, sessionid), p);
     const char *lang = getalias("LANG");
diff --git a/source/src/protos.h b/source/src/protos.h
index f6f2ba11..7f766ec8 100644
--- a/source/src/protos.h
+++ b/source/src/protos.h
@@ -358,6 +358,7 @@ extern void changeteam(int team, bool respawn = true); // deprecated?
 extern void getmap();
 extern void newteam(char *name);
 extern bool securemapcheck(const char *map, bool msg = true);
+extern int getbuildtype();
 extern void sendintro();
 extern void getdemo(char *idx, char *dsp);
 extern void listdemos();
diff --git a/source/src/serverbrowser.cpp b/source/src/serverbrowser.cpp
index 9eb195f2..2cc5d236 100644
--- a/source/src/serverbrowser.cpp
+++ b/source/src/serverbrowser.cpp
@@ -1287,7 +1287,7 @@ void retrieveservers(vector<char> &data)
 
     int starttime = SDL_GetTicks(), timeout = 0;
     string request;
-    sprintf(request, "list %s %d\n",global_name,AC_VERSION);
+    sprintf(request, "list %s %d %d\n",global_name,AC_VERSION,getbuildtype());
     const char *req = request;
     int reqlen = strlen(req);
     ENetBuffer buf;