diff --git a/tests/baselines/reference/umd5.errors.txt b/tests/baselines/reference/umd5.errors.txt
index 9628ad738db..5595de8de29 100644
--- a/tests/baselines/reference/umd5.errors.txt
+++ b/tests/baselines/reference/umd5.errors.txt
@@ -1,4 +1,4 @@
-tests/cases/conformance/externalModules/a.ts(6,9): error TS2686: Identifier 'Foo' must be imported from a module
+tests/cases/conformance/externalModules/a.ts(6,9): error TS2686: 'Foo' refers to a UMD global, but the current file is a module. Consider adding an import instead.
 
 
 ==== tests/cases/conformance/externalModules/a.ts (1 errors) ====
@@ -9,7 +9,7 @@ tests/cases/conformance/externalModules/a.ts(6,9): error TS2686: Identifier 'Foo
     // should error
     let z = Foo;
             ~~~
-!!! error TS2686: Identifier 'Foo' must be imported from a module
+!!! error TS2686: 'Foo' refers to a UMD global, but the current file is a module. Consider adding an import instead.
     
 ==== tests/cases/conformance/externalModules/foo.d.ts (0 errors) ====
     
diff --git a/tests/baselines/reference/umd8.errors.txt b/tests/baselines/reference/umd8.errors.txt
index 9396c8c5450..26c8adef561 100644
--- a/tests/baselines/reference/umd8.errors.txt
+++ b/tests/baselines/reference/umd8.errors.txt
@@ -1,4 +1,4 @@
-tests/cases/conformance/externalModules/a.ts(7,14): error TS2686: Identifier 'Foo' must be imported from a module
+tests/cases/conformance/externalModules/a.ts(7,14): error TS2686: 'Foo' refers to a UMD global, but the current file is a module. Consider adding an import instead.
 
 
 ==== tests/cases/conformance/externalModules/a.ts (1 errors) ====
@@ -10,7 +10,7 @@ tests/cases/conformance/externalModules/a.ts(7,14): error TS2686: Identifier 'Fo
     let z: Foo.SubThing; // OK in ns position
     let x: any = Foo; // Not OK in value position
                  ~~~
-!!! error TS2686: Identifier 'Foo' must be imported from a module
+!!! error TS2686: 'Foo' refers to a UMD global, but the current file is a module. Consider adding an import instead.
     
 ==== tests/cases/conformance/externalModules/foo.d.ts (0 errors) ====