diff --git a/extensions/ql-vscode/src/common/query-language.ts b/extensions/ql-vscode/src/common/query-language.ts
index acbe09018..3f3a81024 100644
--- a/extensions/ql-vscode/src/common/query-language.ts
+++ b/extensions/ql-vscode/src/common/query-language.ts
@@ -35,3 +35,7 @@ export const dbSchemeToLanguage = {
   "ruby.dbscheme": "ruby",
   "swift.dbscheme": "swift",
 };
+
+export function isQueryLanguage(language: string): language is QueryLanguage {
+  return Object.values(QueryLanguage).includes(language as QueryLanguage);
+}
diff --git a/extensions/ql-vscode/src/data-extensions-editor/external-api-usage-query.ts b/extensions/ql-vscode/src/data-extensions-editor/external-api-usage-query.ts
index 0070c96ef..69d513947 100644
--- a/extensions/ql-vscode/src/data-extensions-editor/external-api-usage-query.ts
+++ b/extensions/ql-vscode/src/data-extensions-editor/external-api-usage-query.ts
@@ -4,10 +4,10 @@ import { writeFile } from "fs-extra";
 import { dump as dumpYaml } from "js-yaml";
 import {
   getOnDiskWorkspaceFolders,
-  isQueryLanguage,
   showAndLogExceptionWithTelemetry,
 } from "../helpers";
 import { TeeLogger } from "../common";
+import { isQueryLanguage } from "../common/query-language";
 import { CancellationToken } from "vscode";
 import { CodeQLCliServer } from "../codeql-cli/cli";
 import { DatabaseItem } from "../databases/local-databases";
diff --git a/extensions/ql-vscode/src/databases/local-databases/database-manager.ts b/extensions/ql-vscode/src/databases/local-databases/database-manager.ts
index 587c4b7bb..68e2b5319 100644
--- a/extensions/ql-vscode/src/databases/local-databases/database-manager.ts
+++ b/extensions/ql-vscode/src/databases/local-databases/database-manager.ts
@@ -16,10 +16,10 @@ import { DatabaseItemImpl } from "./database-item-impl";
 import {
   getFirstWorkspaceFolder,
   isFolderAlreadyInWorkspace,
-  isQueryLanguage,
   showAndLogExceptionWithTelemetry,
   showNeverAskAgainDialog,
 } from "../../helpers";
+import { isQueryLanguage } from "../../common/query-language";
 import { existsSync } from "fs";
 import { QlPackGenerator } from "../../qlpack-generator";
 import { asError, getErrorMessage } from "../../pure/helpers-pure";
diff --git a/extensions/ql-vscode/src/helpers.ts b/extensions/ql-vscode/src/helpers.ts
index feafa0211..bb944ebb5 100644
--- a/extensions/ql-vscode/src/helpers.ts
+++ b/extensions/ql-vscode/src/helpers.ts
@@ -14,7 +14,7 @@ import { extLogger, OutputChannelLogger } from "./common";
 import { QueryMetadata } from "./pure/interface-types";
 import { telemetryListener } from "./telemetry";
 import { RedactableError } from "./pure/errors";
-import { QueryLanguage } from "./common/query-language";
+import { isQueryLanguage, QueryLanguage } from "./common/query-language";
 import { isCodespacesTemplate } from "./config";
 import { AppCommandManager } from "./common/commands";
 
@@ -352,10 +352,6 @@ export async function prepareCodeTour(
   }
 }
 
-export function isQueryLanguage(language: string): language is QueryLanguage {
-  return Object.values(QueryLanguage).includes(language as QueryLanguage);
-}
-
 /**
  * Finds the language that a query targets.
  * If it can't be autodetected, prompt the user to specify the language manually.