diff --git a/bff-cli/src/create.rs b/bff-cli/src/create.rs
index 12a502f..f83c6ad 100644
--- a/bff-cli/src/create.rs
+++ b/bff-cli/src/create.rs
@@ -19,7 +19,7 @@ fn validate_version_override_name_type(
     expected_name_type: NameType,
 ) -> BffCliResult<()> {
     if let Some(version_override) = version_override {
-        let override_name_type: NameType = version_override.try_into()?;
+        let override_name_type = version_override.name_type()?;
         if override_name_type != expected_name_type {
             return Err(std::io::Error::other(format!(
                 "`--version-override` implies NameType {:?}, but context requires {:?}",
diff --git a/bff-cli/src/create_resource.rs b/bff-cli/src/create_resource.rs
index 445ab7e..857cf18 100644
--- a/bff-cli/src/create_resource.rs
+++ b/bff-cli/src/create_resource.rs
@@ -18,7 +18,7 @@ fn validate_version_override_name_type(
     expected_name_type: NameType,
 ) -> BffCliResult<()> {
     if let Some(version_override) = version_override {
-        let override_name_type: NameType = version_override.try_into()?;
+        let override_name_type = version_override.name_type()?;
         if override_name_type != expected_name_type {
             return Err(std::io::Error::other(format!(
                 "`--version-override` implies NameType {:?}, but context requires {:?}",
diff --git a/bff-cli/src/extract_resource.rs b/bff-cli/src/extract_resource.rs
index 81aac74..86a2441 100644
--- a/bff-cli/src/extract_resource.rs
+++ b/bff-cli/src/extract_resource.rs
@@ -18,7 +18,7 @@ fn validate_version_override_name_type(
     expected_name_type: NameType,
 ) -> BffCliResult<()> {
     if let Some(version_override) = version_override {
-        let override_name_type: NameType = version_override.try_into()?;
+        let override_name_type = version_override.name_type()?;
         if override_name_type != expected_name_type {
             return Err(std::io::Error::other(format!(
                 "`--version-override` implies NameType {:?}, but context requires {:?}",
diff --git a/bff/src/bigfile/mod.rs b/bff/src/bigfile/mod.rs
index 2b6d81b..ecd45dc 100644
--- a/bff/src/bigfile/mod.rs
+++ b/bff/src/bigfile/mod.rs
@@ -87,7 +87,7 @@ impl BigFile {
         reader.seek(std::io::SeekFrom::Start(start))?;
 
         let version = version_override.clone().unwrap_or(version);
-        (&version).try_into()
+        version.name_type()
     }
 
     pub fn dump_bff_resource<W: std::io::Write + std::io::Seek>(
diff --git a/bff/src/bigfile/resource.rs b/bff/src/bigfile/resource.rs
index 390dd01..1a23c82 100644
--- a/bff/src/bigfile/resource.rs
+++ b/bff/src/bigfile/resource.rs
@@ -50,7 +50,7 @@ pub struct BffResourceHeader {
 
 impl BffResourceHeader {
     pub fn name_type(&self) -> BffResult<NameType> {
-        (&self.version).try_into()
+        self.version.name_type()
     }
 
     pub fn probe_name_type<R: Read + Seek>(reader: &mut R) -> BffResult<NameType> {
diff --git a/bff/src/macros/bigfiles.rs b/bff/src/macros/bigfiles.rs
index 3e410a2..fae052b 100644
--- a/bff/src/macros/bigfiles.rs
+++ b/bff/src/macros/bigfiles.rs
@@ -286,17 +286,13 @@ macro_rules! bigfiles {
             }
         }
 
-        impl TryFrom<&crate::bigfile::versions::Version> for crate::names::NameType {
-            type Error = crate::BffError;
-
-            fn try_from(
-                version: &crate::bigfile::versions::Version,
-            ) -> Result<crate::names::NameType, Self::Error> {
+        impl crate::bigfile::versions::Version {
+            pub fn name_type(&self) -> crate::BffResult<crate::names::NameType> {
                 use crate::bigfile::versions::Version::*;
                 use crate::traits::BigFileIo;
-                match version {
+                match self {
                     $($version_pattern => Ok(<$bigfile as BigFileIo>::NAME_TYPE),)*
-                    _ => Err(crate::error::UnimplementedVersionError::new(version.clone()).into()),
+                    _ => Err(crate::error::UnimplementedVersionError::new(self.clone()).into()),
                 }
             }
         }
diff --git a/bff/src/macros/classes.rs b/bff/src/macros/classes.rs
index d4120c1..5dc6321 100644
--- a/bff/src/macros/classes.rs
+++ b/bff/src/macros/classes.rs
@@ -106,7 +106,7 @@ macro_rules! classes {
                 platform: crate::bigfile::platforms::Platform,
                 name_context: &crate::names::NameContext,
             ) -> crate::BffResult<Class> {
-                let name_type = (&version).try_into()?;
+                let name_type = version.name_type()?;
                 if let Some(class_type) = ClassType::from_name_and_type(resource.class_name, name_type) {
                     return match class_type {
                         $(
diff --git a/bff/src/names/json.rs b/bff/src/names/json.rs
index e9b7231..7099955 100644
--- a/bff/src/names/json.rs
+++ b/bff/src/names/json.rs
@@ -18,7 +18,7 @@ fn probe_name_type_from_value(value: &Value) -> serde_json::Result<NameType> {
             ))
         })?;
     let version: Version = version_string.into();
-    (&version).try_into().map_err(|err: crate::BffError| {
+    version.name_type().map_err(|err: crate::BffError| {
         serde_json::Error::io(Error::new(
             ErrorKind::InvalidData,
             format!("unable to derive NameType from version `{version_string}`: {err}"),