1 files changed, 1 insertions, 3 deletions
diff --git a/src/spi.c b/src/spi.c
index 69012fa..adf858d 100644
--- a/src/spi.c
+++ b/src/spi.c
@@ -8,11 +8,9 @@ volatile Mutex spi_mutex;
 void (*spi_receive) (uint8_t data) = 0;
 
 ISR(SPI_STC_vect, ISR_BLOCK) {
-    void (*spir_w) (uint8_t data) = spi_receive;
     _spi_busy = 0;
-    while (spir_w != NULL) {
+    if (spi_receive != NULL) {
         spir_w(SPDR);
-        spir_w++;
     }
 }