diff --git a/CHANGELOG-rust.md b/CHANGELOG-rust.md
index 8882951..79b56b0 100644
--- a/CHANGELOG-rust.md
+++ b/CHANGELOG-rust.md
@@ -5,6 +5,8 @@ This changelog tracks the Rust `svdtools` project. See
 
 ## [Unreleased]
 
+* Protect from using one `enumeratedValues` in fields with different width
+
 ## [v0.3.17] 2024-07-05
 
 * Support "isDefault" enum value in `svdtools html`
diff --git a/src/patch/device.rs b/src/patch/device.rs
index b66a81f..2ed3ed8 100644
--- a/src/patch/device.rs
+++ b/src/patch/device.rs
@@ -172,7 +172,7 @@ impl DeviceExt for Device {
         // Now process all peripherals
         for (periphspec, val) in device {
             let periphspec = periphspec.str()?;
-            if !periphspec.starts_with('_') {
+            if !Self::KEYWORDS.contains(&periphspec) {
                 //val["_path"] = device["_path"]; // TODO: check
                 self.process_peripheral(periphspec, val.hash()?, config)
                     .with_context(|| format!("According to `{periphspec}`"))?;
diff --git a/src/patch/peripheral.rs b/src/patch/peripheral.rs
index 0cde9b4..c4d08bf 100644
--- a/src/patch/peripheral.rs
+++ b/src/patch/peripheral.rs
@@ -458,12 +458,12 @@ pub(crate) trait RegisterBlockExt: Name {
                 rtag.name.drain(..len);
             }
             if let Some(dname) = rtag.display_name.as_mut() {
-                if glob.is_match(&dname) {
+                if glob.is_match(dname.as_str()) {
                     dname.drain(..len);
                 }
             }
             if let Some(name) = rtag.alternate_register.as_mut() {
-                if glob.is_match(&name) {
+                if glob.is_match(name.as_str()) {
                     name.drain(..len);
                 }
             }
@@ -483,13 +483,13 @@ pub(crate) trait RegisterBlockExt: Name {
                 rtag.name.truncate(nlen - len);
             }
             if let Some(dname) = rtag.display_name.as_mut() {
-                if glob.is_match(&dname) {
+                if glob.is_match(dname.as_str()) {
                     let nlen = dname.len();
                     dname.truncate(nlen - len);
                 }
             }
             if let Some(name) = rtag.alternate_register.as_mut() {
-                if glob.is_match(&name) {
+                if glob.is_match(name.as_str()) {
                     let nlen = name.len();
                     name.truncate(nlen - len);
                 }
diff --git a/src/patch/register.rs b/src/patch/register.rs
index 38ea9e7..21dfd3e 100644
--- a/src/patch/register.rs
+++ b/src/patch/register.rs
@@ -1,3 +1,5 @@
+use std::collections::HashSet;
+
 use anyhow::{anyhow, Context};
 use itertools::Itertools;
 use svd_parser::expand::{BlockPath, RegisterPath};
@@ -768,9 +770,11 @@ impl RegisterExt for Register {
         } else {
             let (fspec, ignore) = fspec.spec();
             let mut offsets: Vec<_> = Vec::new();
+            let mut width_vals = HashSet::new();
             for (i, f) in self.fields().enumerate() {
                 if matchname(&f.name, fspec) {
-                    offsets.push((f.bit_range.offset, f.name.to_string(), i));
+                    offsets.push((f.bit_offset(), f.name.to_string(), i));
+                    width_vals.insert(f.bit_width());
                 }
             }
             if offsets.is_empty() {
@@ -779,7 +783,11 @@ impl RegisterExt for Register {
                 }
                 let present = self.present_fields();
                 return Err(anyhow!(
-                    "Could not find field {rpath}:{fspec}. Present fields: {present}.`"
+                    "Could not find field {rpath}:{fspec}. Present fields: {present}."
+                ));
+            } else if width_vals.len() > 1 {
+                return Err(anyhow!(
+                    "{rpath}:{fspec}. Same enumeratedValues are used for different fields."
                 ));
             }
             let (min_offset, fname, min_offset_pos) =
@@ -794,11 +802,9 @@ impl RegisterExt for Register {
                 let access = ftag.access.or(reg_access).unwrap_or_default();
                 let checked_usage = check_usage(access, usage)
                     .with_context(|| format!("In field {}", ftag.name))?;
-                if config.enum_derive == EnumAutoDerive::None
-                    || ftag.bit_range.offset == *min_offset
-                {
+                if config.enum_derive == EnumAutoDerive::None || ftag.bit_offset() == *min_offset {
                     let mut evs = make_ev_array(fmod)?.usage(make_usage(access, checked_usage));
-                    if ftag.bit_range.offset == *min_offset {
+                    if ftag.bit_offset() == *min_offset {
                         evs = evs.name(Some(name.clone()));
                     }
                     let evs = evs.build(VAL_LVL)?;