diff --git a/arch/riscv/kernel/vdso.c b/arch/riscv/kernel/vdso.c
index 9a68e7eaae4d..2cf76218a5bd 100644
--- a/arch/riscv/kernel/vdso.c
+++ b/arch/riscv/kernel/vdso.c
@@ -15,6 +15,7 @@
 #include <asm/vdso.h>
 #include <linux/time_namespace.h>
 #include <vdso/datapage.h>
+#include <vdso/vsyscall.h>
 
 enum vvar_pages {
 	VVAR_DATA_PAGE_OFFSET,