diff --git a/extensions/terminal-suggest/src/test/terminalSuggestMain.test.ts b/extensions/terminal-suggest/src/test/terminalSuggestMain.test.ts
index 9f3c327d953..d13f45a28c6 100644
--- a/extensions/terminal-suggest/src/test/terminalSuggestMain.test.ts
+++ b/extensions/terminal-suggest/src/test/terminalSuggestMain.test.ts
@@ -92,7 +92,7 @@ suite('Terminal Suggest', () => {
 					const prefix = commandLine.slice(0, cursorPosition).split(' ').at(-1) || '';
 					const filesRequested = testSpec.expectedResourceRequests?.type === 'files' || testSpec.expectedResourceRequests?.type === 'both';
 					const foldersRequested = testSpec.expectedResourceRequests?.type === 'folders' || testSpec.expectedResourceRequests?.type === 'both';
-					const terminalContext = { commandLine, cursorPosition };
+					const terminalContext = { commandLine, cursorPosition, allowFallbackCompletions: true };
 					const result = await getCompletionItemsFromSpecs(
 						completionSpecs,
 						terminalContext,
diff --git a/src/vs/workbench/contrib/terminalContrib/suggest/browser/terminalSuggestAddon.ts b/src/vs/workbench/contrib/terminalContrib/suggest/browser/terminalSuggestAddon.ts
index ca00f1e3d0c..559b514cd55 100644
--- a/src/vs/workbench/contrib/terminalContrib/suggest/browser/terminalSuggestAddon.ts
+++ b/src/vs/workbench/contrib/terminalContrib/suggest/browser/terminalSuggestAddon.ts
@@ -237,7 +237,8 @@ export class SuggestAddon extends Disposable implements ITerminalAddon, ISuggest
 		};
 		this._requestedCompletionsIndex = this._currentPromptInputState.cursorIndex;
 
-		const allowFallbackCompletions = explicitlyInvoked || this._configurationService.getValue<ITerminalSuggestConfiguration>(terminalSuggestConfigSection).quickSuggestions?.unknown === 'on';
+		const quickSuggestionsConfig = this._configurationService.getValue<ITerminalSuggestConfiguration>(terminalSuggestConfigSection).quickSuggestions;
+		const allowFallbackCompletions = explicitlyInvoked || quickSuggestionsConfig === true || typeof quickSuggestionsConfig === 'object' && 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) {
@@ -362,8 +363,9 @@ export class SuggestAddon extends Disposable implements ITerminalAddon, ISuggest
 				if (!this._terminalSuggestWidgetVisibleContextKey.get()) {
 					const commandLineHasSpace = promptInputState.prefix.trim().match(/\s/);
 					if (
-						(!commandLineHasSpace && config.quickSuggestions.commands !== 'off') ||
-						(commandLineHasSpace && config.quickSuggestions.arguments !== 'off')
+						(typeof config.quickSuggestions === 'boolean' && config.quickSuggestions) ||
+						(typeof config.quickSuggestions === 'object' && !commandLineHasSpace && config.quickSuggestions.commands !== 'off') ||
+						(typeof config.quickSuggestions === 'object' && commandLineHasSpace && config.quickSuggestions.arguments !== 'off')
 					) {
 						if (promptInputState.prefix.match(/[^\s]$/)) {
 							if (!this._wasLastInputArrowKey()) {
diff --git a/src/vs/workbench/contrib/terminalContrib/suggest/common/terminalSuggestConfiguration.ts b/src/vs/workbench/contrib/terminalContrib/suggest/common/terminalSuggestConfiguration.ts
index 1d0d40e9d2c..db600bb842b 100644
--- a/src/vs/workbench/contrib/terminalContrib/suggest/common/terminalSuggestConfiguration.ts
+++ b/src/vs/workbench/contrib/terminalContrib/suggest/common/terminalSuggestConfiguration.ts
@@ -43,7 +43,7 @@ export const terminalSuggestConfigSection = 'terminal.integrated.suggest';
 
 export interface ITerminalSuggestConfiguration {
 	enabled: boolean;
-	quickSuggestions: {
+	quickSuggestions: /*Legacy - was this when experimental*/boolean | {
 		commands: 'off' | 'on';
 		arguments: 'off' | 'on';
 		unknown: 'off' | 'on';