diff --git a/src/types.ts b/src/types.ts
index 1a24849e32..be5185eb20 100644
--- a/src/types.ts
+++ b/src/types.ts
@@ -22,7 +22,7 @@ export { Hash } from './template/tag/hash'
 export { Value } from './template/value'
 // eslint-disable-next-line deprecation/deprecation
 export { _evalToken, evalToken, evalQuotedToken } from './render/expression'
-export { toPromise, toThenable, toValueSync } from './util/async'
+export { toPromise, toValueSync } from './util/async'
 export { defaultOperators, Operators } from './render/operator'
 export { createTrie, Trie } from './util/operator-trie'
 export { toValue } from './util/underscore'
diff --git a/src/util/async.ts b/src/util/async.ts
index 3dba5cb96c..9d836cd42b 100644
--- a/src/util/async.ts
+++ b/src/util/async.ts
@@ -44,5 +44,3 @@ export function toValueSync<T> (val: Generator<unknown, T, unknown> | T): T {
   } while (!done)
   return value
 }
-
-export const toThenable = toPromise