diff --git a/libs/libfdt/src/lib.rs b/libs/libfdt/src/lib.rs
index ab3c83f..d1ab24e 100644
--- a/libs/libfdt/src/lib.rs
+++ b/libs/libfdt/src/lib.rs
@@ -459,7 +459,7 @@
     }
 
     /// Returns the first subnode of this
-    pub fn first_subnode(&'a mut self) -> Result<Option<Self>> {
+    pub fn first_subnode(self) -> Result<Option<Self>> {
         let offset = self.fdt.first_subnode(self.offset)?;
 
         Ok(offset.map(|offset| Self { fdt: self.fdt, offset }))