diff --git a/src/vs/editor/common/modes.ts b/src/vs/editor/common/modes.ts
index b85d9a10530..0f14cfc7226 100644
--- a/src/vs/editor/common/modes.ts
+++ b/src/vs/editor/common/modes.ts
@@ -293,7 +293,7 @@ export interface ISuggestion {
 	documentation?: string | IMarkdownString;
 	filterText?: string;
 	sortText?: string;
-	autoSelect?: boolean;
+	preselect?: boolean;
 	noAutoAccept?: boolean;
 	commitCharacters?: string[];
 	overwriteBefore?: number;
diff --git a/src/vs/editor/contrib/suggest/suggestMemory.ts b/src/vs/editor/contrib/suggest/suggestMemory.ts
index 62eccf9ab04..e278a619c96 100644
--- a/src/vs/editor/contrib/suggest/suggestMemory.ts
+++ b/src/vs/editor/contrib/suggest/suggestMemory.ts
@@ -24,7 +24,7 @@ export abstract class Memory {
 				// stop when leaving the group of top matches
 				break;
 			}
-			if (suggestion.autoSelect) {
+			if (suggestion.preselect) {
 				// stop when seeing an auto-select-item
 				return i;
 			}
diff --git a/src/vs/editor/contrib/suggest/test/suggestMemory.test.ts b/src/vs/editor/contrib/suggest/test/suggestMemory.test.ts
index 1ab9368e286..02509927e62 100644
--- a/src/vs/editor/contrib/suggest/test/suggestMemory.test.ts
+++ b/src/vs/editor/contrib/suggest/test/suggestMemory.test.ts
@@ -45,9 +45,9 @@ suite('SuggestMemories', function () {
 		let item2 = createSuggestItem('bazz', 0);
 		let item3 = createSuggestItem('bazz', 0);
 		let item4 = createSuggestItem('bazz', 0);
-		item1.suggestion.autoSelect = false;
-		item2.suggestion.autoSelect = true;
-		item3.suggestion.autoSelect = true;
+		item1.suggestion.preselect = false;
+		item2.suggestion.preselect = true;
+		item3.suggestion.preselect = true;
 
 		assert.equal(mem.select(buffer, pos, [item1, item2, item3, item4]), 1);
 	});
@@ -57,9 +57,9 @@ suite('SuggestMemories', function () {
 		let item2 = createSuggestItem('bazz', 0);
 		let item3 = createSuggestItem('bazz', 0);
 		let item4 = createSuggestItem('bazz', 0);
-		item1.suggestion.autoSelect = false;
-		item2.suggestion.autoSelect = true;
-		item3.suggestion.autoSelect = true;
+		item1.suggestion.preselect = false;
+		item2.suggestion.preselect = true;
+		item3.suggestion.preselect = true;
 		let items = [item1, item2, item3, item4];
 
 
diff --git a/src/vs/vscode.d.ts b/src/vs/vscode.d.ts
index 22a0db8c562..9249356bdde 100644
--- a/src/vs/vscode.d.ts
+++ b/src/vs/vscode.d.ts
@@ -3105,6 +3105,13 @@ declare module 'vscode' {
 		 */
 		filterText?: string;
 
+		/**
+		 * Select this item when showing. *Note* that only one completion item can be selected and
+		 * that the editor decides which item that is. The rule is that the *first* item of those
+		 * that match best is selected.
+		 */
+		preselect?: boolean;
+
 		/**
 		 * A string or snippet that should be inserted in a document when selecting
 		 * this completion. When `falsy` the [label](#CompletionItem.label)
diff --git a/src/vs/workbench/api/node/extHostLanguageFeatures.ts b/src/vs/workbench/api/node/extHostLanguageFeatures.ts
index 44ed5cb0131..0e819350fc0 100644
--- a/src/vs/workbench/api/node/extHostLanguageFeatures.ts
+++ b/src/vs/workbench/api/node/extHostLanguageFeatures.ts
@@ -662,6 +662,7 @@ class SuggestAdapter {
 			documentation: item.documentation,
 			filterText: item.filterText,
 			sortText: item.sortText,
+			preselect: item.preselect,
 			//
 			insertText: undefined,
 			additionalTextEdits: item.additionalTextEdits && item.additionalTextEdits.map(typeConvert.TextEdit.from),
diff --git a/src/vs/workbench/api/node/extHostTypes.ts b/src/vs/workbench/api/node/extHostTypes.ts
index fd232ad7822..e06d371676e 100644
--- a/src/vs/workbench/api/node/extHostTypes.ts
+++ b/src/vs/workbench/api/node/extHostTypes.ts
@@ -1073,7 +1073,7 @@ export enum CompletionItemKind {
 	TypeParameter = 24
 }
 
-export class CompletionItem {
+export class CompletionItem implements vscode.CompletionItem {
 
 	label: string;
 	kind: CompletionItemKind;
@@ -1081,6 +1081,7 @@ export class CompletionItem {
 	documentation: string | MarkdownString;
 	sortText: string;
 	filterText: string;
+	preselect: boolean;
 	insertText: string | SnippetString;
 	range: Range;
 	textEdit: TextEdit;
@@ -1100,6 +1101,7 @@ export class CompletionItem {
 			documentation: this.documentation,
 			sortText: this.sortText,
 			filterText: this.filterText,
+			preselect: this.preselect,
 			insertText: this.insertText,
 			textEdit: this.textEdit
 		};