diff --git a/bsp/raspberry-pi/raspi3-64/.config b/bsp/raspberry-pi/raspi3-64/.config
index 1587f978ca98b1621961a5eed2849ee9e2195524..ab27804eb073e27b74df2ebbf4fd83b4ef3baea6 100644
--- a/bsp/raspberry-pi/raspi3-64/.config
+++ b/bsp/raspberry-pi/raspi3-64/.config
@@ -467,7 +467,7 @@ CONFIG_BSP_USING_PIN=y
 CONFIG_BSP_USING_CORETIMER=y
 CONFIG_BSP_USING_SYSTIMER=y
 CONFIG_RT_USING_SYSTIMER1=y
-# CONFIG_RT_USING_SYSTIMER3 is not set
+CONFIG_RT_USING_SYSTIMER3=y
 # CONFIG_BSP_USING_I2C is not set
 # CONFIG_BSP_USING_SPI is not set
 # CONFIG_BSP_USING_WDT is not set
diff --git a/bsp/raspberry-pi/raspi3-64/rtconfig.h b/bsp/raspberry-pi/raspi3-64/rtconfig.h
index 0dc44fcb15a2986e652c7d407b08704136a84a11..0dbe07854c8fd5dbefa81d473e534a9ffae60e03 100644
--- a/bsp/raspberry-pi/raspi3-64/rtconfig.h
+++ b/bsp/raspberry-pi/raspi3-64/rtconfig.h
@@ -196,6 +196,7 @@
 #define BSP_USING_CORETIMER
 #define BSP_USING_SYSTIMER
 #define RT_USING_SYSTIMER1
+#define RT_USING_SYSTIMER3
 #define BSP_USING_SDIO
 #define BSP_USING_SDIO0