diff --git a/include/zephyr/arch/riscv/common/linker.ld b/include/zephyr/arch/riscv/common/linker.ld
index 3dbec5f0a20..5bed82439d6 100644
--- a/include/zephyr/arch/riscv/common/linker.ld
+++ b/include/zephyr/arch/riscv/common/linker.ld
@@ -396,6 +396,10 @@ SECTION_PROLOGUE(.last_section,,)
   /* Fill last section with a word to ensure location counter and actual rom
    * region data usage match. */
   LONG(CONFIG_LINKER_LAST_SECTION_ID_PATTERN)
+  /* __rom_region_size is used when configuring the PMP entry of the ROM region.
+   * Addresses (pmpaddr) in PMP registers need to be aligned to 4. Align
+   * __rom_region_size to 4 to meet that requirement. */
+  MPU_MIN_SIZE_ALIGN
 #endif
 } GROUP_LINK_IN(ROMABLE_REGION)