diff --git a/plat/xilinx/common/include/plat_fdt.h b/plat/xilinx/common/include/plat_fdt.h
index a1ee1e1..47a678c 100644
--- a/plat/xilinx/common/include/plat_fdt.h
+++ b/plat/xilinx/common/include/plat_fdt.h
@@ -9,4 +9,8 @@
 
 void prepare_dtb(void);
 
+#if defined(XILINX_OF_BOARD_DTB_ADDR)
+int32_t is_valid_dtb(void *fdt);
+#endif
+
 #endif /* PLAT_FDT_H */