diff --git a/src/find/matchers/printer.rs b/src/find/matchers/printer.rs
index c26287a1..f6c033b4 100644
--- a/src/find/matchers/printer.rs
+++ b/src/find/matchers/printer.rs
@@ -132,6 +132,6 @@ mod tests {
         let deps = FakeDependencies::new();
 
         assert!(matcher.matches(&abbbc, &mut deps.new_matcher_io()));
-        assert!(deps.get_output_as_string().is_empty());
+        assert_eq!(deps.get_output_as_string(), "");
     }
 }
diff --git a/src/updatedb/mod.rs b/src/updatedb/mod.rs
index 4b9fe619..6568cff1 100644
--- a/src/updatedb/mod.rs
+++ b/src/updatedb/mod.rs
@@ -368,12 +368,12 @@ fn do_updatedb(args: &[&str]) -> UResult<()> {
     let frcoder = Frcoder::new(output.as_slice(), config.db_format);
     writer
         .write_all(&frcoder.generate_header())
-        .map_err(&write_err)?;
+        .map_err(write_err)?;
     for v in frcoder {
-        writer.write_all(v.as_slice()).map_err(&write_err)?;
+        writer.write_all(v.as_slice()).map_err(write_err)?;
     }
 
-    writer.flush().map_err(&write_err)?;
+    writer.flush().map_err(write_err)?;
 
     Ok(())
 }