diff --git a/app/driver/spi.c b/app/driver/spi.c
index 12c32b54..c2d673b9 100644
--- a/app/driver/spi.c
+++ b/app/driver/spi.c
@@ -134,7 +134,7 @@ void spi_mast_byte_write(uint8 spi_no, uint8 *data)
 
     while(READ_PERI_REG(SPI_CMD(spi_no))&SPI_USR);
 
-    WRITE_PERI_REG(SPI_W0(HSPI), *data);
+    WRITE_PERI_REG(SPI_W0(spi_no), *data);
 
     SET_PERI_REG_MASK(SPI_CMD(spi_no), SPI_USR);
     while(READ_PERI_REG(SPI_CMD(spi_no))&SPI_USR);
diff --git a/app/include/user_config.h b/app/include/user_config.h
index c812f2fa..6dd40d7c 100644
--- a/app/include/user_config.h
+++ b/app/include/user_config.h
@@ -17,10 +17,9 @@
 // #define DEVELOP_VERSION
 #define FULL_VERSION_FOR_USER
 
-#ifdef DEVELOP_VERSION
-
 #define USE_OPTIMIZE_PRINTF
 
+#ifdef DEVELOP_VERSION
 #define NODE_DEBUG
 #endif	/* DEVELOP_VERSION */