diff --git a/ash/src/entry.rs b/ash/src/entry.rs
index f5393de..b349612 100644
--- a/ash/src/entry.rs
+++ b/ash/src/entry.rs
@@ -181,13 +181,11 @@ pub trait EntryV1_1: EntryV1_0 {
 
 impl EntryCustom<Arc<DynamicLibrary>> {
     /// ```rust,no_run
-    /// # #[macro_use]
-    /// # extern crate ash;
     /// use ash::{vk, Entry, version::EntryV1_0};
     /// # fn main() -> Result<(), Box<std::error::Error>> {
     /// let entry = Entry::new()?;
     /// let app_info = vk::ApplicationInfo {
-    ///     api_version: vk_make_version!(1, 0, 0),
+    ///     api_version: vk::make_version(1, 0, 0),
     ///     ..Default::default()
     /// };
     /// let create_info = vk::InstanceCreateInfo {
@@ -240,17 +238,15 @@ impl<L> EntryCustom<L> {
 
     #[doc = "<https://www.khronos.org/registry/vulkan/specs/1.1-extensions/man/html/vkEnumerateInstanceVersion.html>"]
     /// ```rust,no_run
-    /// # #[macro_use]
-    /// # extern crate ash;
-    /// # use ash::Entry;
+    /// # use ash::{Entry, vk};
     /// # fn main() -> Result<(), Box<std::error::Error>> {
     /// let entry = Entry::new()?;
     /// match entry.try_enumerate_instance_version()? {
     ///     // Vulkan 1.1+
     ///     Some(version) => {
-    ///         let major = vk_version_major!(version);
-    ///         let minor = vk_version_minor!(version);
-    ///         let patch = vk_version_patch!(version);
+    ///         let major = vk::version_major(version);
+    ///         let minor = vk::version_minor(version);
+    ///         let patch = vk::version_patch(version);
     ///     },
     ///     // Vulkan 1.0
     ///     None => {},
diff --git a/ash/src/lib.rs b/ash/src/lib.rs
index caa2ad3..d887a37 100644
--- a/ash/src/lib.rs
+++ b/ash/src/lib.rs
@@ -5,13 +5,11 @@
 //! ## Examples
 //!
 //! ```rust,no_run
-//! # #[macro_use]
-//! # extern crate ash;
 //! use ash::{vk, Entry, version::EntryV1_0};
 //! # fn main() -> Result<(), Box<dyn std::error::Error>> {
 //! let entry = Entry::new()?;
 //! let app_info = vk::ApplicationInfo {
-//!     api_version: vk_make_version!(1, 0, 0),
+//!     api_version: vk::make_version(1, 0, 0),
 //!     ..Default::default()
 //! };
 //! let create_info = vk::InstanceCreateInfo {
diff --git a/ash/src/vk.rs b/ash/src/vk.rs
index 711b0e4..95bb663 100644
--- a/ash/src/vk.rs
+++ b/ash/src/vk.rs
@@ -21,32 +21,20 @@ pub trait Handle {
     fn from_raw(_: u64) -> Self;
 }
 #[doc = "<https://www.khronos.org/registry/vulkan/specs/1.1-extensions/man/html/VK_MAKE_VERSION.html>"]
-#[macro_export]
-macro_rules! vk_make_version {
-    ( $ major : expr , $ minor : expr , $ patch : expr ) => {
-        (($major as u32) << 22) | (($minor as u32) << 12) | $patch as u32
-    };
+pub const fn make_version(major: u32, minor: u32, patch: u32) -> u32 {
+    (major << 22) | (minor << 12) | patch
 }
 #[doc = "<https://www.khronos.org/registry/vulkan/specs/1.1-extensions/man/html/VK_VERSION_MAJOR.html>"]
-#[macro_export]
-macro_rules! vk_version_major {
-    ( $ major : expr ) => {
-        ($major as u32) >> 22
-    };
+pub const fn version_major(version: u32) -> u32 {
+    version >> 22
 }
 #[doc = "<https://www.khronos.org/registry/vulkan/specs/1.1-extensions/man/html/VK_VERSION_MINOR.html>"]
-#[macro_export]
-macro_rules! vk_version_minor {
-    ( $ minor : expr ) => {
-        (($minor as u32) >> 12) & 0x3ff
-    };
+pub const fn version_minor(version: u32) -> u32 {
+    (version >> 12) & 0x3ff
 }
 #[doc = "<https://www.khronos.org/registry/vulkan/specs/1.1-extensions/man/html/VK_VERSION_PATCH.html>"]
-#[macro_export]
-macro_rules! vk_version_patch {
-    ( $ minor : expr ) => {
-        ($minor as u32) & 0xfff
-    };
+pub const fn version_patch(version: u32) -> u32 {
+    version & 0xfff
 }
 pub type RROutput = c_ulong;
 pub type VisualID = c_uint;
diff --git a/ash/tests/constant_size_arrays.rs b/ash/tests/constant_size_arrays.rs
index c546027..c58cd5e 100644
--- a/ash/tests/constant_size_arrays.rs
+++ b/ash/tests/constant_size_arrays.rs
@@ -27,15 +27,10 @@ fn assert_struct_field_is_array() {
 #[allow(dead_code)]
 fn assert_ffi_array_param_is_pointer() {
     use ash::version::DeviceV1_0;
-    unsafe {
-        // don't run it, just make sure it compiles
-        if false {
-            let device: ash::Device = std::mem::zeroed();
-            let cmd_buffer = std::mem::zeroed();
+    // don't run it, just make sure it compiles
+    unsafe fn dummy(device: &ash::Device, cmd_buffer: ash::vk::CommandBuffer) {
+        let blend_constants: [f32; 4] = [0.0, 0.0, 0.0, 0.0];
 
-            let blend_constants: [f32; 4] = [0.0, 0.0, 0.0, 0.0];
-
-            device.cmd_set_blend_constants(cmd_buffer, &blend_constants);
-        }
+        device.cmd_set_blend_constants(cmd_buffer, &blend_constants);
     }
 }
diff --git a/examples/src/lib.rs b/examples/src/lib.rs
index fb43a4d..d06508a 100644
--- a/examples/src/lib.rs
+++ b/examples/src/lib.rs
@@ -340,7 +340,7 @@ impl ExampleBase {
                 .application_version(0)
                 .engine_name(&app_name)
                 .engine_version(0)
-                .api_version(vk_make_version!(1, 0, 0));
+                .api_version(vk::make_version(1, 0, 0));
 
             let create_info = vk::InstanceCreateInfo::builder()
                 .application_info(&appinfo)
diff --git a/generator/src/lib.rs b/generator/src/lib.rs
index 9c0587b..f713ef0 100644
--- a/generator/src/lib.rs
+++ b/generator/src/lib.rs
@@ -185,35 +185,23 @@ pub fn handle_nondispatchable_macro() -> Tokens {
 pub fn vk_version_macros() -> Tokens {
     quote! {
         #[doc = "<https://www.khronos.org/registry/vulkan/specs/1.1-extensions/man/html/VK_MAKE_VERSION.html>"]
-        #[macro_export]
-        macro_rules! vk_make_version {
-            ($major:expr, $minor:expr, $patch:expr) => {
-                (($major as u32) << 22) | (($minor as u32) << 12) | $patch as u32
-            };
+        pub const fn make_version(major: u32, minor: u32, patch: u32) -> u32 {
+            (major << 22) | (minor << 12) | patch
         }
 
         #[doc = "<https://www.khronos.org/registry/vulkan/specs/1.1-extensions/man/html/VK_VERSION_MAJOR.html>"]
-        #[macro_export]
-        macro_rules! vk_version_major {
-            ($major:expr) => {
-                ($major as u32) >> 22
-            };
+        pub const fn version_major(version: u32) -> u32 {
+            version >> 22
         }
 
         #[doc = "<https://www.khronos.org/registry/vulkan/specs/1.1-extensions/man/html/VK_VERSION_MINOR.html>"]
-        #[macro_export]
-        macro_rules! vk_version_minor {
-            ($minor:expr) => {
-                (($minor as u32) >> 12) & 0x3ff
-            };
+        pub const fn version_minor(version: u32) -> u32 {
+            (version >> 12) & 0x3ff
         }
 
         #[doc = "<https://www.khronos.org/registry/vulkan/specs/1.1-extensions/man/html/VK_VERSION_PATCH.html>"]
-        #[macro_export]
-        macro_rules! vk_version_patch {
-            ($minor:expr) => {
-                ($minor as u32) & 0xfff
-            };
+        pub const fn version_patch(version: u32) -> u32 {
+            version & 0xfff
         }
     }
 }