diff --git a/include/dt-bindings/clock/kinetis_sim.h b/include/dt-bindings/clock/kinetis_sim.h
index f6c53e3f877..7c6feda99e1 100644
--- a/include/dt-bindings/clock/kinetis_sim.h
+++ b/include/dt-bindings/clock/kinetis_sim.h
@@ -10,6 +10,7 @@
 #define KINETIS_SIM_CORESYS_CLK		0
 #define KINETIS_SIM_PLATFORM_CLK	1
 #define KINETIS_SIM_BUS_CLK		2
+#define KINETIS_SIM_FAST_PERIPHERAL_CLK	5
 #define KINETIS_SIM_LPO_CLK		19
 
 #endif /* ZEPHYR_INCLUDE_DT_BINDINGS_CLOCK_KINETIS_SIM_H_ */