diff --git a/crates/ra_arena/src/lib.rs b/crates/ra_arena/src/lib.rs
index 1c97c2662db..69b5f10e08c 100644
--- a/crates/ra_arena/src/lib.rs
+++ b/crates/ra_arena/src/lib.rs
@@ -76,7 +76,7 @@ impl<ID: ArenaId, T> Arena<ID, T> {
         self.data.push(value);
         ID::from_raw(id)
     }
-    pub fn iter<'a>(&'a self) -> impl Iterator<Item = (ID, &'a T)> {
+    pub fn iter(&self) -> impl Iterator<Item = (ID, &T)> {
         self.data.iter().enumerate().map(|(idx, value)| (ID::from_raw(RawId(idx as u32)), value))
     }
 }