diff --git a/rust/lanzatool/src/esp.rs b/rust/lanzatool/src/esp.rs
index a8535aa..62bc705 100644
--- a/rust/lanzatool/src/esp.rs
+++ b/rust/lanzatool/src/esp.rs
@@ -88,7 +88,7 @@ fn nixos_path(path: impl AsRef<Path>, name: &str) -> Result<PathBuf> {
 }
 
 fn generation_path(generation: &Generation) -> PathBuf {
-    if let Some(specialisation_name) = generation.is_specialized() {
+    if let Some(specialisation_name) = generation.is_specialised() {
         PathBuf::from(format!(
             "nixos-generation-{}-specialisation-{}.efi",
             generation, specialisation_name
diff --git a/rust/lanzatool/src/generation.rs b/rust/lanzatool/src/generation.rs
index 2d15dea..70da0bb 100644
--- a/rust/lanzatool/src/generation.rs
+++ b/rust/lanzatool/src/generation.rs
@@ -64,7 +64,7 @@ impl Generation {
         })
     }
 
-    pub fn is_specialized(&self) -> Option<SpecialisationName> {
+    pub fn is_specialised(&self) -> Option<SpecialisationName> {
         self.specialisation_name.clone()
     }