diff --git a/firmware/masterchip/spi_config.h b/firmware/masterchip/spi_config.h
index 30e155c..08250e4 100644
--- a/firmware/masterchip/spi_config.h
+++ b/firmware/masterchip/spi_config.h
@@ -1,7 +1,5 @@
 
 #define SPI_BAUDRATE 1000000
-#ifdef SPI_MASTER
-#undef SPI_MASTER
-#endif //SPI_MASTER
-//#define SPI_SS_PORT D
-//#define SPI_SS_PIN 7
+#define SPI_MASTER
+#define SPI_SS_PORT D
+#define SPI_SS_PIN 7
diff --git a/firmware/shared/spi.c b/firmware/shared/spi.c
index 2252f62..3ad1108 100644
--- a/firmware/shared/spi.c
+++ b/firmware/shared/spi.c
@@ -9,19 +9,6 @@
 
 #include <spi.h>
 
-uint16_t *spi_proto_globals8[] = {
-                                  &foo
-                                 };
-uint8_t *spi_proto_globals16[] = {
-                                  &bar
-                                 };
-funptr_t spi_proto_funcs[] = {
-                             &baz
-                             };
-
-
-
-
 /* SPI framework.
  *
  * currently alpha, uses interrupts, single master/single slave operation
@@ -116,6 +103,7 @@ void spi_mst_read(uint8_t len, uint8_t *data){
 }
 
 
+#ifndef SPI_MASTER
 
 void __attribute__((always_inline)) spi_sla_handle_packet(){
         // TODO: make slave not hangup in case of partial read
@@ -144,7 +132,6 @@ void __attribute__((always_inline)) spi_sla_handle_packet(){
 	}
 }
 
-#ifndef SPI_MASTER
 ISR(SPI_vect){
     SPCR &= ~(_BV(SPIE)); //disable spi interrupts
     spi_sla_handle_packet(); 
diff --git a/firmware/slavechip/spi_config.h b/firmware/slavechip/spi_config.h
index 08250e4..30e155c 100644
--- a/firmware/slavechip/spi_config.h
+++ b/firmware/slavechip/spi_config.h
@@ -1,5 +1,7 @@
 
 #define SPI_BAUDRATE 1000000
-#define SPI_MASTER
-#define SPI_SS_PORT D
-#define SPI_SS_PIN 7
+#ifdef SPI_MASTER
+#undef SPI_MASTER
+#endif //SPI_MASTER
+//#define SPI_SS_PORT D
+//#define SPI_SS_PIN 7