diff --git a/nselib/afp.lua b/nselib/afp.lua
index 2e3683f12..139008f3c 100644
--- a/nselib/afp.lua
+++ b/nselib/afp.lua
@@ -542,7 +542,7 @@ Proto = {
     local quantum = 1024
     local data, packet, status
 
-    data = bin.pack( "CCI", option, option_len, quantum  )
+    data = bin.pack( ">CCI", option, option_len, quantum  )
     packet = self:create_fp_packet( REQUEST.OpenSession, data_offset, data )
 
     self:send_fp_packet( packet )
@@ -787,7 +787,7 @@ Proto = {
     local bitmap = USER_BITMAP.UserId
     local result = {}
 
-    local data = bin.pack( "CCI>S", COMMAND.FPGetUserInfo, flags, uid, bitmap )
+    local data = bin.pack( ">CCIS", COMMAND.FPGetUserInfo, flags, uid, bitmap )
     packet = self:create_fp_packet( REQUEST.Command, data_offset, data )
 
     self:send_fp_packet( packet )
diff --git a/nselib/mysql.lua b/nselib/mysql.lua
index 1603994e8..2c2143d28 100644
--- a/nselib/mysql.lua
+++ b/nselib/mysql.lua
@@ -91,7 +91,7 @@ local function decodeHeader( data, pos )
   local response = {}
   local pos, tmp = pos or 1, 0
 
-  pos, tmp = bin.unpack( "I", data, pos )
+  pos, tmp = bin.unpack( "<I", data, pos )
   response.len = ( tmp & 255 )
   response.number = ( tmp >> 24 )
 
@@ -244,7 +244,7 @@ function loginRequest( socket, params, username, password, salt )
     hash = createLoginHash( password, salt )
   end
 
-  local packet = bin.pack( "SSICAzp",
+  local packet = bin.pack( "<SSICAzp",
     clicap,
     extcapabilities,
     MAXPACKET,
@@ -256,7 +256,7 @@ function loginRequest( socket, params, username, password, salt )
 
   local tmp = packet:len() + ( packetno << 24 )
 
-  packet = bin.pack( "I", tmp ) .. packet
+  packet = bin.pack( "<I", tmp ) .. packet
 
   try( socket:send(packet) )
   packet = try( socket:receive_bytes(HEADER_SIZE) )
@@ -273,7 +273,7 @@ function loginRequest( socket, params, username, password, salt )
   pos, is_error = bin.unpack( "C", packet, pos )
 
   if is_error > 0 then
-    pos, response.errorcode = bin.unpack( "S", packet, pos )
+    pos, response.errorcode = bin.unpack( "<S", packet, pos )
 
     local has_sqlstate
     pos, has_sqlstate = bin.unpack( "C", packet, pos )
@@ -288,8 +288,8 @@ function loginRequest( socket, params, username, password, salt )
   else
     response.errorcode = 0
     pos, response.affectedrows = bin.unpack( "C", packet, pos )
-    pos, response.serverstatus = bin.unpack( "S", packet, pos )
-    pos, response.warnings = bin.unpack( "S", packet, pos )
+    pos, response.serverstatus = bin.unpack( "<S", packet, pos )
+    pos, response.warnings = bin.unpack( "<S", packet, pos )
   end
 
   return true, response
@@ -335,9 +335,9 @@ function decodeField( data, pos )
   pos, _ = bin.unpack( "C", data, pos )
 
   -- charset, in my case 0x0800
-  pos, _ = bin.unpack( "S", data, pos )
+  pos, _ = bin.unpack( "<S", data, pos )
 
-  pos, field.length = bin.unpack( "I", data, pos )
+  pos, field.length = bin.unpack( "<I", data, pos )
   pos, field.type = bin.unpack( "A6", data, pos )
 
   return pos, field