diff --git a/src/vs/workbench/contrib/terminalContrib/suggest/browser/terminalSuggestAddon.ts b/src/vs/workbench/contrib/terminalContrib/suggest/browser/terminalSuggestAddon.ts
index 1fe3d048e72..61fafbb8000 100644
--- a/src/vs/workbench/contrib/terminalContrib/suggest/browser/terminalSuggestAddon.ts
+++ b/src/vs/workbench/contrib/terminalContrib/suggest/browser/terminalSuggestAddon.ts
@@ -261,7 +261,7 @@ export class SuggestAddon extends Disposable implements ITerminalAddon, ISuggest
 		this._requestedCompletionsIndex = this._currentPromptInputState.cursorIndex;
 
 		const quickSuggestionsConfig = this._configurationService.getValue<ITerminalSuggestConfiguration>(terminalSuggestConfigSection).quickSuggestions;
-		const allowFallbackCompletions = explicitlyInvoked || quickSuggestionsConfig === true || typeof quickSuggestionsConfig === 'object' && quickSuggestionsConfig.unknown === 'on';
+		const allowFallbackCompletions = explicitlyInvoked || quickSuggestionsConfig.unknown === 'on';
 		const providedCompletions = await this._terminalCompletionService.provideCompletions(this._currentPromptInputState.prefix, this._currentPromptInputState.cursorIndex, allowFallbackCompletions, this.shellType, this._capabilities, token, doNotRequestExtensionCompletions);
 
 		if (token.isCancellationRequested) {
@@ -413,9 +413,8 @@ export class SuggestAddon extends Disposable implements ITerminalAddon, ISuggest
 				if (!this._terminalSuggestWidgetVisibleContextKey.get()) {
 					const commandLineHasSpace = promptInputState.prefix.trim().match(/\s/);
 					if (
-						(typeof config.quickSuggestions === 'boolean' && config.quickSuggestions) ||
-						(typeof config.quickSuggestions === 'object' && !commandLineHasSpace && config.quickSuggestions.commands !== 'off') ||
-						(typeof config.quickSuggestions === 'object' && commandLineHasSpace && config.quickSuggestions.arguments !== 'off')
+						(!commandLineHasSpace && config.quickSuggestions.commands !== 'off') ||
+						(commandLineHasSpace && config.quickSuggestions.arguments !== 'off')
 					) {
 						if (promptInputState.prefix.match(/[^\s]$/)) {
 							sent = this._requestTriggerCharQuickSuggestCompletions();
diff --git a/src/vs/workbench/contrib/terminalContrib/suggest/common/terminalSuggestConfiguration.ts b/src/vs/workbench/contrib/terminalContrib/suggest/common/terminalSuggestConfiguration.ts
index e4e4e73ca3f..f5cf2b9aac6 100644
--- a/src/vs/workbench/contrib/terminalContrib/suggest/common/terminalSuggestConfiguration.ts
+++ b/src/vs/workbench/contrib/terminalContrib/suggest/common/terminalSuggestConfiguration.ts
@@ -44,7 +44,7 @@ export const terminalSuggestConfigSection = 'terminal.integrated.suggest';
 
 export interface ITerminalSuggestConfiguration {
 	enabled: boolean;
-	quickSuggestions: /*Legacy - was this when experimental*/boolean | {
+	quickSuggestions: {
 		commands: 'off' | 'on';
 		arguments: 'off' | 'on';
 		unknown: 'off' | 'on';