7 files changed, 7 insertions, 2 deletions
diff --git a/testsuite/tests/perf/compiler/T13056.hs b/testsuite/tests/perf/compiler/T13056.hs
index f2dd040bdc..bc0b7894d9 100644
--- a/testsuite/tests/perf/compiler/T13056.hs
+++ b/testsuite/tests/perf/compiler/T13056.hs
@@ -1,3 +1,4 @@
+{-# LANGUAGE Haskell2010 #-}
 {-# LANGUAGE DeriveDataTypeable #-}
 {-# LANGUAGE DeriveGeneric #-}
 {-# LANGUAGE DeriveFunctor #-}
diff --git a/testsuite/tests/perf/compiler/T14683.hs b/testsuite/tests/perf/compiler/T14683.hs
index 41146c7f70..157d0eb6c6 100644
--- a/testsuite/tests/perf/compiler/T14683.hs
+++ b/testsuite/tests/perf/compiler/T14683.hs
@@ -1,3 +1,4 @@
+{-# LANGUAGE Haskell2010 #-}
 {-# OPTIONS_GHC -w #-}
 {-# OPTIONS -XMagicHash -XBangPatterns #-}
 module Grammar where
diff --git a/testsuite/tests/perf/compiler/T3064.hs b/testsuite/tests/perf/compiler/T3064.hs
index 298a09cecf..af3dc2cde7 100644
--- a/testsuite/tests/perf/compiler/T3064.hs
+++ b/testsuite/tests/perf/compiler/T3064.hs
@@ -1,3 +1,4 @@
+{-# LANGUAGE Haskell2010 #-}
 {-# OPTIONS_GHC -fno-warn-redundant-constraints #-}
 {-# LANGUAGE Rank2Types, TypeSynonymInstances, FlexibleInstances #-}
 {-# LANGUAGE TypeFamilies, GeneralizedNewtypeDeriving #-}
diff --git a/testsuite/tests/perf/compiler/T9872a.hs b/testsuite/tests/perf/compiler/T9872a.hs
index 7ceba4ee66..8074cf98cd 100644
--- a/testsuite/tests/perf/compiler/T9872a.hs
+++ b/testsuite/tests/perf/compiler/T9872a.hs
@@ -1,3 +1,4 @@
+{-# LANGUAGE Haskell2010 #-}
 {-
  - Instant Insanity using Type Families.
  -
diff --git a/testsuite/tests/perf/compiler/T9872a.stderr b/testsuite/tests/perf/compiler/T9872a.stderr
index b38fcaeeb1..067dc35606 100644
--- a/testsuite/tests/perf/compiler/T9872a.stderr
+++ b/testsuite/tests/perf/compiler/T9872a.stderr
@@ -1,5 +1,5 @@
 
-T9872a.hs:16:8:
+T9872a.hs:17:8:
     No instance for (Show
                        (Proxy
                           (Cons
diff --git a/testsuite/tests/perf/compiler/T9872c.hs b/testsuite/tests/perf/compiler/T9872c.hs
index b925c9f791..dff3d792e8 100644
--- a/testsuite/tests/perf/compiler/T9872c.hs
+++ b/testsuite/tests/perf/compiler/T9872c.hs
@@ -1,3 +1,4 @@
+{-# LANGUAGE Haskell2010 #-}
 {-
  - Instant Insanity using Closed Type Families, but no DataKinds
  -
diff --git a/testsuite/tests/perf/compiler/T9872c.stderr b/testsuite/tests/perf/compiler/T9872c.stderr
index 121e54d48e..5c22868ff2 100644
--- a/testsuite/tests/perf/compiler/T9872c.stderr
+++ b/testsuite/tests/perf/compiler/T9872c.stderr
@@ -1,5 +1,5 @@
 
-T9872c.hs:17:8:
+T9872c.hs:18:8:
     No instance for (Show
                        (Proxy
                           (Cons