diff --git a/programs/network/tftpc/build.bat b/programs/network/tftpc/build.bat
new file mode 100644
index 0000000000..91f4514b73
--- /dev/null
+++ b/programs/network/tftpc/build.bat
@@ -0,0 +1,6 @@
+@erase lang.inc
+@echo lang fix en >lang.inc
+@fasm -m 16384 tftpc.asm tftpc
+@kpack tftpc
+@erase lang.inc
+@pause
\ No newline at end of file
diff --git a/programs/network/tftpc/tftpc.asm b/programs/network/tftpc/tftpc.asm
index 2d3a9f5e88..fa0b1080d4 100644
--- a/programs/network/tftpc/tftpc.asm
+++ b/programs/network/tftpc/tftpc.asm
@@ -82,7 +82,7 @@ START:
         jnz     exit
 
 stop_transfer:
-        mcall   40, 00100111b
+        mcall   40, 0x80000027 ; 00100111b
 
 red_win:
         call draw_window
@@ -288,7 +288,7 @@ start_transfer:
         mov     esi, edi
         mcall   send, [socketnum], I_END
 
-        mcall   40, 10000101b
+        mcall   40, 0x80000085 ; 10000101b
 
         mov     [last_ack], 0