diff --git a/c/src/lib/libbsp/arm/xilinx-zynq/startup/bspsmp.c b/c/src/lib/libbsp/arm/xilinx-zynq/startup/bspsmp.c
index 310014d8de..b516823243 100644
--- a/c/src/lib/libbsp/arm/xilinx-zynq/startup/bspsmp.c
+++ b/c/src/lib/libbsp/arm/xilinx-zynq/startup/bspsmp.c
@@ -14,7 +14,7 @@
 
 #include <rtems/score/smpimpl.h>
 
-extern void _start(void);
+#include <bsp/start.h>
 
 bool _CPU_SMP_Start_processor(uint32_t cpu_index)
 {