diff --git a/client/ip65/function_dispatcher.s b/client/ip65/function_dispatcher.s
index 9eaa134..42f8c74 100644
--- a/client/ip65/function_dispatcher.s
+++ b/client/ip65/function_dispatcher.s
@@ -144,10 +144,11 @@ init_failed:
   tax
   dey
   lda (nb65_params),y
-  jsr dns_set_hostname  
-  bcc @dns_error
+  jsr dns_set_hostname 
+  bcs @dns_error
   jsr dns_resolve
   bcs @dns_error
+
   ldy #NB65_DNS_HOSTNAME_IP
   ldx #4
 @copy_dns_ip:
@@ -300,6 +301,7 @@ init_failed:
   iny
   lda tftp_filesize+1
   sta (nb65_params),y
+  .byte $92
   clc
 @tftp_error:   
   rts
diff --git a/client/test/test_cart_api.s b/client/test/test_cart_api.s
index cf8f1cb..6da65cb 100644
--- a/client/test/test_cart_api.s
+++ b/client/test/test_cart_api.s
@@ -156,6 +156,9 @@ init:
   stax nb65_param_buffer+NB65_TFTP_POINTER
   ldax #nb65_param_buffer
   call #NB65_TFTP_CALLBACK_UPLOAD
+  bcc :+
+  jmp print_errorcode
+:
 
 
 @download_test:
@@ -174,6 +177,9 @@ init:
   stax nb65_param_buffer+NB65_TFTP_POINTER
   ldax #nb65_param_buffer
   call #NB65_TFTP_CALLBACK_DOWNLOAD
+    bcc :+
+  jmp print_errorcode
+:
   lda #'$'
   jsr print_a
   lda  nb65_param_buffer+NB65_TFTP_FILESIZE+1