diff --git a/arch/riscv/mm/init.c b/arch/riscv/mm/init.c
index 92002952c621..66f5952f39c0 100644
--- a/arch/riscv/mm/init.c
+++ b/arch/riscv/mm/init.c
@@ -517,7 +517,7 @@ void mark_rodata_ro(void)
 }
 #endif
 
-void __init resource_init(void)
+static void __init resource_init(void)
 {
 	struct memblock_region *region;