diff --git a/src/platform/avr32/MIZAR32/mizar32.h b/src/platform/avr32/MIZAR32/mizar32.h
index f762590c..8ef3f58c 100644
--- a/src/platform/avr32/MIZAR32/mizar32.h
+++ b/src/platform/avr32/MIZAR32/mizar32.h
@@ -60,6 +60,8 @@
  */
 //! @{
 
+#define FOSC32          32768                                 //!< Osc32 frequency: Hz.
+
 #define FOSC0           12000000                              //!< Osc0 frequency: Hz.
 #define OSC0_STARTUP    AVR32_PM_OSCCTRL0_STARTUP_2048_RCOSC  //!< Osc0 startup time: RCOsc periods.