diff --git a/crates/base-db/src/change.rs b/crates/base-db/src/change.rs
index 335c7840a62..f202a885e27 100644
--- a/crates/base-db/src/change.rs
+++ b/crates/base-db/src/change.rs
@@ -68,8 +68,8 @@ impl FileChange {
             let source_root = db.source_root(source_root_id);
             let durability = durability(&source_root);
             // XXX: can't actually remove the file, just reset the text
-            let text = text.as_ref().map(String::as_str).unwrap_or_else(|| "");
-            db.set_file_text_with_durability(file_id, text, durability)
+            let text = text.unwrap_or_default();
+            db.set_file_text_with_durability(file_id, &text, durability)
         }
         if let Some(crate_graph) = self.crate_graph {
             db.set_crate_graph_with_durability(Arc::new(crate_graph), Durability::HIGH);
diff --git a/crates/base-db/src/lib.rs b/crates/base-db/src/lib.rs
index 69cd0eb3344..5dcb580723f 100644
--- a/crates/base-db/src/lib.rs
+++ b/crates/base-db/src/lib.rs
@@ -135,7 +135,7 @@ impl<Db: ?Sized + SourceDatabaseExt> SourceDatabaseExt2 for Db {
         durability: Durability,
     ) {
         let bytes = text.as_bytes();
-        let compressed = lz4_flex::compress_prepend_size(&bytes);
+        let compressed = lz4_flex::compress_prepend_size(bytes);
         self.set_compressed_file_text_with_durability(
             file_id,
             Arc::from(compressed.as_slice()),
diff --git a/crates/test-fixture/src/lib.rs b/crates/test-fixture/src/lib.rs
index a654366c62a..8cf65d11c6c 100644
--- a/crates/test-fixture/src/lib.rs
+++ b/crates/test-fixture/src/lib.rs
@@ -149,12 +149,12 @@ impl ChangeFixture {
         for entry in fixture {
             let text = if entry.text.contains(CURSOR_MARKER) {
                 if entry.text.contains(ESCAPED_CURSOR_MARKER) {
-                    entry.text.replace(ESCAPED_CURSOR_MARKER, CURSOR_MARKER).into()
+                    entry.text.replace(ESCAPED_CURSOR_MARKER, CURSOR_MARKER)
                 } else {
                     let (range_or_offset, text) = extract_range_or_offset(&entry.text);
                     assert!(file_position.is_none());
                     file_position = Some((file_id, range_or_offset));
-                    text.into()
+                    text
                 }
             } else {
                 entry.text.as_str().into()
@@ -251,7 +251,7 @@ impl ChangeFixture {
             fs.insert(core_file, VfsPath::new_virtual_path("/sysroot/core/lib.rs".to_owned()));
             roots.push(SourceRoot::new_library(fs));
 
-            source_change.change_file(core_file, Some(mini_core.source_code().into()));
+            source_change.change_file(core_file, Some(mini_core.source_code()));
 
             let all_crates = crate_graph.crates_in_topological_order();
 
@@ -287,7 +287,7 @@ impl ChangeFixture {
             );
             roots.push(SourceRoot::new_library(fs));
 
-            source_change.change_file(proc_lib_file, Some(source.into()));
+            source_change.change_file(proc_lib_file, Some(source));
 
             let all_crates = crate_graph.crates_in_topological_order();