diff --git a/os/hal/include/spi.h b/os/hal/include/spi.h
index a563b262c..47cf5f379 100644
--- a/os/hal/include/spi.h
+++ b/os/hal/include/spi.h
@@ -262,8 +262,8 @@ typedef enum {
     (spip)->spd_config->spc_endcb(spip);                                    \
     if ((spip)->spd_state == SPI_COMPLETE)                                  \
       (spip)->spd_state = SPI_READY;                                        \
-    _spi_wakeup_isr(spip);                                                  \
   }                                                                         \
+  _spi_wakeup_isr(spip);                                                    \
 }
 
 /*===========================================================================*/
diff --git a/readme.txt b/readme.txt
index eaacf9fcd..678309e59 100644
--- a/readme.txt
+++ b/readme.txt
@@ -65,6 +65,7 @@
 *****************************************************************************
 
 *** 2.1.5 ***
+- FIX: Fixed broken SPI synchronous API (bug 3127921).
 - FIX: Fixed missing vector.c files in LPC11xx and LPC13xx ports (bug 3124849).
 - FIX: Fixed pwmDisableChannel() now working in STM32 PWM driver (bug 3121246).
 - FIX: Fixed problem with PWM channel callbacks (bug 3120785).