diff --git a/soc/lowrisc/opentitan/Kconfig.defconfig b/soc/lowrisc/opentitan/Kconfig.defconfig
index 59c13c4ba81..94c92d69c41 100644
--- a/soc/lowrisc/opentitan/Kconfig.defconfig
+++ b/soc/lowrisc/opentitan/Kconfig.defconfig
@@ -21,6 +21,6 @@ config NUM_IRQS
 # The OpenTitan SoC requires a manifest in front of the
 # application binary.
 config ROM_START_OFFSET
-	default 0x404
+	default 0x400
 
 endif # SOC_OPENTITAN
diff --git a/soc/lowrisc/opentitan/rom_header.S b/soc/lowrisc/opentitan/rom_header.S
index e7b41235dab..2303614c4dc 100644
--- a/soc/lowrisc/opentitan/rom_header.S
+++ b/soc/lowrisc/opentitan/rom_header.S
@@ -17,7 +17,7 @@ GTEXT(__rom_header)
  * 0x6c47 (minor).  The manifest format is documented here:
  * https://github.com/lowRISC/opentitan/blob/689a163294e1791bd30cfe096decf7f9233abad4/sw/host/opentitanlib/src/image/manifest.rs#L205
  */
-SECTION_FUNC(rom_header, __rom_header)
+SECTION_VAR(rom_header, __rom_header)
 	.rept(225)
 	.word 0
 	.endr