diff --git a/crates/ra_hir/src/source_id.rs b/crates/ra_hir/src/source_id.rs
index 324b79824e..6cdb901413 100644
--- a/crates/ra_hir/src/source_id.rs
+++ b/crates/ra_hir/src/source_id.rs
@@ -52,7 +52,7 @@ impl<N: AstNode> AstId<N> {
 #[derive(Debug)]
 pub(crate) struct FileAstId<N: AstNode> {
     raw: ErasedFileAstId,
-    _ty: PhantomData<N>,
+    _ty: PhantomData<fn() -> N>,
 }
 
 impl<N: AstNode> Clone for FileAstId<N> {
diff --git a/crates/ra_syntax/src/ptr.rs b/crates/ra_syntax/src/ptr.rs
index 0550dca1a1..4823eb82e9 100644
--- a/crates/ra_syntax/src/ptr.rs
+++ b/crates/ra_syntax/src/ptr.rs
@@ -36,7 +36,7 @@ impl SyntaxNodePtr {
 #[derive(Debug, PartialEq, Eq, Hash)]
 pub struct AstPtr<N: AstNode> {
     raw: SyntaxNodePtr,
-    _ty: PhantomData<N>,
+    _ty: PhantomData<fn() -> N>,
 }
 
 impl<N: AstNode> Copy for AstPtr<N> {}