diff --git a/src/server/session.ts b/src/server/session.ts
index 42946002bc4..af84ffff48a 100644
--- a/src/server/session.ts
+++ b/src/server/session.ts
@@ -2107,7 +2107,7 @@ namespace ts.server {
                     })),
                     request.arguments.changedFiles && mapIterator(arrayIterator(request.arguments.changedFiles), file => ({
                         fileName: file.fileName,
-                        changes: mapDefinedIterator(arrayIterator(file.textChanges), change => {
+                        changes: mapDefinedIterator(arrayReverseIterator(file.textChanges), change => {
                             const scriptInfo = Debug.assertDefined(this.projectService.getScriptInfo(file.fileName));
                             const start = scriptInfo.lineOffsetToPosition(change.start.line, change.start.offset);
                             const end = scriptInfo.lineOffsetToPosition(change.end.line, change.end.offset);
diff --git a/src/testRunner/unittests/tsserver/applyChangesToOpenFiles.ts b/src/testRunner/unittests/tsserver/applyChangesToOpenFiles.ts
index 3c0da365bb5..68c3839e789 100644
--- a/src/testRunner/unittests/tsserver/applyChangesToOpenFiles.ts
+++ b/src/testRunner/unittests/tsserver/applyChangesToOpenFiles.ts
@@ -127,12 +127,12 @@ ${file.content}`;
                                     {
                                         start: { line: 1, offset: 1 },
                                         end: { line: 1, offset: 1 },
-                                        newText: "let zz = 10;",
+                                        newText: "let zzz = 10;",
                                     },
                                     {
                                         start: { line: 1, offset: 1 },
                                         end: { line: 1, offset: 1 },
-                                        newText: "let zzz = 10;",
+                                        newText: "let zz = 10;",
                                     }
                                 ]
                             }