diff --git a/layouts.sh b/layouts.sh
index d58e66f..169a58b 100755
--- a/layouts.sh
+++ b/layouts.sh
@@ -1,4 +1,6 @@
 #!/usr/bin/env bash
+# SPDX-License-Identifier: GPL-3.0-only
+# This script produces layout data for the System76 Keyboard Configurator
 
 set -e
 
diff --git a/src/board/system76/common/kbled.c b/src/board/system76/common/kbled.c
index 1e36e18..7f7fb7e 100644
--- a/src/board/system76/common/kbled.c
+++ b/src/board/system76/common/kbled.c
@@ -1,3 +1,5 @@
+// SPDX-License-Identifier: GPL-3.0-only
+
 #include <board/kbled.h>
 #include <common/macro.h>
 
diff --git a/src/ec/it5570e/include/ec/scratch.h b/src/ec/it5570e/include/ec/scratch.h
index 752dfc5..9195a38 100644
--- a/src/ec/it5570e/include/ec/scratch.h
+++ b/src/ec/it5570e/include/ec/scratch.h
@@ -1,3 +1,5 @@
+// SPDX-License-Identifier: GPL-3.0-only
+
 #ifndef _EC_SCRATCH_H
 #define _EC_SCRATCH_H
 
diff --git a/src/ec/it8587e/include/ec/scratch.h b/src/ec/it8587e/include/ec/scratch.h
index 1688d76..44be010 100644
--- a/src/ec/it8587e/include/ec/scratch.h
+++ b/src/ec/it8587e/include/ec/scratch.h
@@ -1,3 +1,5 @@
+// SPDX-License-Identifier: GPL-3.0-only
+
 #ifndef _EC_SCRATCH_H
 #define _EC_SCRATCH_H
 
diff --git a/tool/src/main.rs b/tool/src/main.rs
index 115af52..d29186e 100644
--- a/tool/src/main.rs
+++ b/tool/src/main.rs
@@ -397,7 +397,7 @@ fn main() {
                 let output = parse_arg(&mut args, "output");
                 let input = parse_arg(&mut args, "input");
                 match args.next() {
-                    Some(value_str) => match u16::from_str_radix(&value_str, 16) {
+                    Some(value_str) => match u16::from_str_radix(value_str.trim_start_matches("0x"), 16) {
                         Ok(value) => match unsafe { keymap_set(layer, output, input, value) } {
                             Ok(()) => (),
                             Err(err) => {