diff --git a/Cargo.lock b/Cargo.lock
index 1aa121030e..f39cd01c37 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -963,6 +963,7 @@ dependencies = [
  "ra_db",
  "ra_fmt",
  "ra_hir",
+ "ra_prof",
  "ra_syntax",
  "ra_text_edit",
  "rustc-hash",
diff --git a/crates/ra_assists/Cargo.toml b/crates/ra_assists/Cargo.toml
index 0d2109e4ed..9d3091b919 100644
--- a/crates/ra_assists/Cargo.toml
+++ b/crates/ra_assists/Cargo.toml
@@ -16,6 +16,7 @@ either = "1.5"
 ra_syntax = { path = "../ra_syntax" }
 ra_text_edit = { path = "../ra_text_edit" }
 ra_fmt = { path = "../ra_fmt" }
+ra_prof = { path = "../ra_prof" }
 ra_db = { path = "../ra_db" }
 hir = { path = "../ra_hir", package = "ra_hir" }
 test_utils = { path = "../test_utils" }
diff --git a/crates/ra_assists/src/assists/add_missing_impl_members.rs b/crates/ra_assists/src/assists/add_missing_impl_members.rs
index 5bb937bdef..e4c22ad559 100644
--- a/crates/ra_assists/src/assists/add_missing_impl_members.rs
+++ b/crates/ra_assists/src/assists/add_missing_impl_members.rs
@@ -99,6 +99,7 @@ fn add_missing_impl_members_inner(
     assist_id: &'static str,
     label: &'static str,
 ) -> Option<Assist> {
+    let _p = ra_prof::profile("add_missing_impl_members_inner");
     let impl_node = ctx.find_node_at_offset::<ast::ImplBlock>()?;
     let impl_item_list = impl_node.item_list()?;