diff --git a/src/tools/compiletest/src/common.rs b/src/tools/compiletest/src/common.rs
index 5159b1a692ef..df0cf61e7c4a 100644
--- a/src/tools/compiletest/src/common.rs
+++ b/src/tools/compiletest/src/common.rs
@@ -95,9 +95,9 @@ impl fmt::Display for Mode {
     }
 }
 
-#[derive(Clone)]
+#[derive(Clone, PartialEq)]
 pub enum CompareMode {
-    Nll
+    Nll,
 }
 
 impl CompareMode {
diff --git a/src/tools/compiletest/src/runtest.rs b/src/tools/compiletest/src/runtest.rs
index f0feb9b50f1b..a7c34921842d 100644
--- a/src/tools/compiletest/src/runtest.rs
+++ b/src/tools/compiletest/src/runtest.rs
@@ -2605,7 +2605,10 @@ impl<'test> TestCx<'test> {
         }
 
         let fixture_path = expected_output_path(&self.testpaths, None, &None, UI_FIXED);
-        if fixture_path.exists() {
+
+        // TODO(killercup): Add `nll.rs.fixed` files matching
+        let nll = self.config.compare_mode.as_ref().map(|x| *x == CompareMode::Nll).unwrap_or(false);
+        if fixture_path.exists() && !nll {
             use std::collections::HashSet;
             use rustfix::{apply_suggestions, get_suggestions_from_json};