diff --git a/arch/riscv/mm/init.c b/arch/riscv/mm/init.c
index d8f37034c092..0afcd4ae7eed 100644
--- a/arch/riscv/mm/init.c
+++ b/arch/riscv/mm/init.c
@@ -572,9 +572,9 @@ static void __init create_kernel_page_table(pgd_t *pgdir, bool early)
 static void __init create_fdt_early_page_table(uintptr_t fix_fdt_va,
 					       uintptr_t dtb_pa)
 {
+#ifndef CONFIG_BUILTIN_DTB
 	uintptr_t pa = dtb_pa & ~(PMD_SIZE - 1);
 
-#ifndef CONFIG_BUILTIN_DTB
 	/* Make sure the fdt fixmap address is always aligned on PMD size */
 	BUILD_BUG_ON(FIX_FDT % (PMD_SIZE / PAGE_SIZE));