diff --git a/uefi-raw/CHANGELOG.md b/uefi-raw/CHANGELOG.md
index 1ff1e6625..3ef2e23ae 100644
--- a/uefi-raw/CHANGELOG.md
+++ b/uefi-raw/CHANGELOG.md
@@ -3,6 +3,7 @@
 ## Added
 
 ## Changed
+- **Breaking:** Various uses of `bool` have been replaced with `Boolean`.
 
 
 # uefi-raw - v0.12 (2025-10-21)
diff --git a/uefi-raw/src/protocol/device_path.rs b/uefi-raw/src/protocol/device_path.rs
index 95c5fdbce..fa05b616b 100644
--- a/uefi-raw/src/protocol/device_path.rs
+++ b/uefi-raw/src/protocol/device_path.rs
@@ -289,7 +289,7 @@ pub struct DevicePathUtilitiesProtocol {
         device_path_instance_size: *mut usize,
     ) -> *const DevicePathProtocol,
     pub is_device_path_multi_instance:
-        unsafe extern "efiapi" fn(device_path: *const DevicePathProtocol) -> bool,
+        unsafe extern "efiapi" fn(device_path: *const DevicePathProtocol) -> Boolean,
     pub create_device_node: unsafe extern "efiapi" fn(
         node_type: DeviceType,
         node_sub_type: DeviceSubType,
diff --git a/uefi-raw/src/protocol/hii/config.rs b/uefi-raw/src/protocol/hii/config.rs
index 740de6499..1982524c3 100644
--- a/uefi-raw/src/protocol/hii/config.rs
+++ b/uefi-raw/src/protocol/hii/config.rs
@@ -5,7 +5,7 @@
 use core::fmt::Debug;
 
 use crate::protocol::device_path::DevicePathProtocol;
-use crate::{Char16, Guid, Status, guid, newtype_enum};
+use crate::{Boolean, Char16, Guid, Status, guid, newtype_enum};
 
 /// EFI_CONFIG_KEYWORD_HANDLER_PROTOCOL
 #[derive(Debug)]
@@ -129,7 +129,7 @@ pub union IfrTypeValue {
     pub u16: u16,         // EFI_IFR_TYPE_NUM_SIZE_16
     pub u32: u32,         // EFI_IFR_TYPE_NUM_SIZE_32
     pub u64: u64,         // EFI_IFR_TYPE_NUM_SIZE_64
-    pub b: bool,          // EFI_IFR_TYPE_BOOLEAN
+    pub b: Boolean,       // EFI_IFR_TYPE_BOOLEAN
     pub time: HiiTime,    // EFI_IFR_TYPE_TIME
     pub date: HiiDate,    // EFI_IFR_TYPE_DATE
     pub string: StringId, // EFI_IFR_TYPE_STRING, EFI_IFR_TYPE_ACTION
diff --git a/uefi-raw/src/protocol/shell.rs b/uefi-raw/src/protocol/shell.rs
index 8e9500221..621e9dd6f 100644
--- a/uefi-raw/src/protocol/shell.rs
+++ b/uefi-raw/src/protocol/shell.rs
@@ -4,7 +4,7 @@
 
 use core::ffi::c_void;
 
-use crate::{Char8, Char16, Event, Guid, Handle, Status, guid};
+use crate::{Boolean, Char8, Char16, Event, Guid, Handle, Status, guid};
 
 use super::device_path::DevicePathProtocol;
 use super::file_system::FileInfo;
@@ -58,14 +58,15 @@ pub struct ShellProtocol {
     pub set_env: unsafe extern "efiapi" fn(
         name: *const Char16,
         value: *const Char16,
-        volatile: bool,
+        volatile: Boolean,
     ) -> Status,
-    pub get_alias: unsafe extern "efiapi" fn(alias: *const Char16, volatile: bool) -> *const Char16,
+    pub get_alias:
+        unsafe extern "efiapi" fn(alias: *const Char16, volatile: Boolean) -> *const Char16,
     pub set_alias: unsafe extern "efiapi" fn(
         command: *const Char16,
         alias: *const Char16,
-        replace: bool,
-        volatile: bool,
+        replace: Boolean,
+        volatile: Boolean,
     ) -> Status,
     pub get_help_text: unsafe extern "efiapi" fn(
         command: *const Char16,
@@ -97,11 +98,11 @@ pub struct ShellProtocol {
     pub remove_dup_in_file_list:
         unsafe extern "efiapi" fn(file_list: *const *const ShellFileInfo) -> Status,
 
-    pub batch_is_active: unsafe extern "efiapi" fn() -> bool,
-    pub is_root_shell: unsafe extern "efiapi" fn() -> bool,
+    pub batch_is_active: unsafe extern "efiapi" fn() -> Boolean,
+    pub is_root_shell: unsafe extern "efiapi" fn() -> Boolean,
     pub enable_page_break: unsafe extern "efiapi" fn(),
     pub disable_page_break: unsafe extern "efiapi" fn(),
-    pub get_page_break: unsafe extern "efiapi" fn() -> bool,
+    pub get_page_break: unsafe extern "efiapi" fn() -> Boolean,
     pub get_device_name: unsafe extern "efiapi" fn(
         device_handle: Handle,
         flags: ShellDeviceNameFlags,
diff --git a/uefi-raw/src/protocol/string.rs b/uefi-raw/src/protocol/string.rs
index 37b9695ca..4f2ed5bab 100644
--- a/uefi-raw/src/protocol/string.rs
+++ b/uefi-raw/src/protocol/string.rs
@@ -1,6 +1,6 @@
 // SPDX-License-Identifier: MIT OR Apache-2.0
 
-use crate::{Char8, Char16, Guid, guid};
+use crate::{Boolean, Char8, Char16, Guid, guid};
 
 #[derive(Debug)]
 #[repr(C)]
@@ -11,7 +11,7 @@ pub struct UnicodeCollationProtocol {
         this: *const Self,
         string: *const Char16,
         pattern: *const Char16,
-    ) -> bool,
+    ) -> Boolean,
     pub str_lwr: unsafe extern "efiapi" fn(this: *const Self, s: *mut Char16),
     pub str_upr: unsafe extern "efiapi" fn(this: *const Self, s: *mut Char16),
     pub fat_to_str: unsafe extern "efiapi" fn(
@@ -25,7 +25,7 @@ pub struct UnicodeCollationProtocol {
         s: *const Char16,
         fat_size: usize,
         fat: *mut Char8,
-    ) -> bool,
+    ) -> Boolean,
     pub supported_languages: *const Char8,
 }
 
diff --git a/uefi/src/proto/string/unicode_collation.rs b/uefi/src/proto/string/unicode_collation.rs
index eb9f1f12a..5adcdad7e 100644
--- a/uefi/src/proto/string/unicode_collation.rs
+++ b/uefi/src/proto/string/unicode_collation.rs
@@ -54,7 +54,7 @@ impl UnicodeCollation {
     /// any single character followed by a "." followed by any string.
     #[must_use]
     pub fn metai_match(&self, s: &CStr16, pattern: &CStr16) -> bool {
-        unsafe { (self.0.metai_match)(&self.0, s.as_ptr().cast(), pattern.as_ptr().cast()) }
+        unsafe { (self.0.metai_match)(&self.0, s.as_ptr().cast(), pattern.as_ptr().cast()) }.into()
     }
 
     /// Converts the characters in `s` to lower case characters.
@@ -132,7 +132,7 @@ impl UnicodeCollation {
                 buf.as_mut_ptr(),
             )
         };
-        if failed {
+        if bool::from(failed) {
             Err(StrConversionError::ConversionFailed)
         } else {
             // After the conversion, there is a possibility that the converted string