diff --git a/tests/baselines/reference/for-inStatementsArrayErrors.errors.txt b/tests/baselines/reference/for-inStatementsArrayErrors.errors.txt
index 3555c64ccf4..6886d992bb2 100644
--- a/tests/baselines/reference/for-inStatementsArrayErrors.errors.txt
+++ b/tests/baselines/reference/for-inStatementsArrayErrors.errors.txt
@@ -1,4 +1,4 @@
-tests/cases/conformance/statements/for-inStatements/for-inStatementsArrayErrors.ts(5,14): error TS7017: Index signature of object type implicitly has an 'any' type.
+tests/cases/conformance/statements/for-inStatements/for-inStatementsArrayErrors.ts(5,14): error TS7015: Element implicitly has an 'any' type because index expression is not of type 'number'.
 tests/cases/conformance/statements/for-inStatements/for-inStatementsArrayErrors.ts(6,16): error TS2362: The left-hand side of an arithmetic operation must be of type 'any', 'number' or an enum type.
 tests/cases/conformance/statements/for-inStatements/for-inStatementsArrayErrors.ts(7,9): error TS2365: Operator '===' cannot be applied to types 'string' and 'number'.
 tests/cases/conformance/statements/for-inStatements/for-inStatementsArrayErrors.ts(9,16): error TS2339: Property 'unknownProperty' does not exist on type 'string'.
@@ -13,7 +13,7 @@ tests/cases/conformance/statements/for-inStatements/for-inStatementsArrayErrors.
     for (let x in a) {
         let a1 = a[x + 1];
                  ~~~~~~~~
-!!! error TS7017: Index signature of object type implicitly has an 'any' type.
+!!! error TS7015: Element implicitly has an 'any' type because index expression is not of type 'number'.
         let a2 = a[x - 1];
                    ~
 !!! error TS2362: The left-hand side of an arithmetic operation must be of type 'any', 'number' or an enum type.
diff --git a/tests/baselines/reference/noImplicitAnyIndexing.errors.txt b/tests/baselines/reference/noImplicitAnyIndexing.errors.txt
index 8b75459ebd0..8f4cf616bda 100644
--- a/tests/baselines/reference/noImplicitAnyIndexing.errors.txt
+++ b/tests/baselines/reference/noImplicitAnyIndexing.errors.txt
@@ -1,4 +1,4 @@
-tests/cases/compiler/noImplicitAnyIndexing.ts(13,26): error TS7017: Index signature of object type implicitly has an 'any' type.
+tests/cases/compiler/noImplicitAnyIndexing.ts(13,26): error TS7015: Element implicitly has an 'any' type because index expression is not of type 'number'.
 tests/cases/compiler/noImplicitAnyIndexing.ts(20,9): error TS7017: Index signature of object type implicitly has an 'any' type.
 tests/cases/compiler/noImplicitAnyIndexing.ts(23,9): error TS7017: Index signature of object type implicitly has an 'any' type.
 tests/cases/compiler/noImplicitAnyIndexing.ts(31,10): error TS7017: Index signature of object type implicitly has an 'any' type.
@@ -19,7 +19,7 @@ tests/cases/compiler/noImplicitAnyIndexing.ts(31,10): error TS7017: Index signat
     // Should be implicit 'any' ; property access fails, no string indexer.
     var strRepresentation3 = MyEmusEnum["monehh"];
                              ~~~~~~~~~~~~~~~~~~~~
-!!! error TS7017: Index signature of object type implicitly has an 'any' type.
+!!! error TS7015: Element implicitly has an 'any' type because index expression is not of type 'number'.
     
     // Should be okay; should be a MyEmusEnum
     var strRepresentation4 = MyEmusEnum["emu"];