diff --git a/lib/blisp.c b/lib/blisp.c
index b3d8f42..3ae2777 100644
--- a/lib/blisp.c
+++ b/lib/blisp.c
@@ -360,13 +360,13 @@ blisp_return_t blisp_device_flash_erase(struct blisp_device* device,
   *(uint32_t*)(payload + 4) = end_address;
 
   blisp_return_t ret = blisp_send_command(device, 0x30, payload, 8, true);
-  if (ret < 0)
+  if (ret != BLISP_OK)
     return ret;
   do {
     ret = blisp_receive_response(device, false);
   } while (ret == BLISP_ERR_PENDING);
 
-  return 0;
+  return ret;
 }
 
 blisp_return_t blisp_device_flash_write(struct blisp_device* device,
@@ -414,4 +414,4 @@ blisp_return_t blisp_device_reset(struct blisp_device* device) {
 void blisp_device_close(struct blisp_device* device) {
   struct sp_port* serial_port = device->serial_port;
   sp_close(serial_port);
-}
\ No newline at end of file
+}