diff --git a/lib/pure/asyncfutures.nim b/lib/pure/asyncfutures.nim
index 6df6527d59..8fedb16fe9 100644
--- a/lib/pure/asyncfutures.nim
+++ b/lib/pure/asyncfutures.nim
@@ -177,7 +177,7 @@ proc fail*[T](future: Future[T], error: ref Exception) =
     if getStackTrace(error) == "": getStackTrace() else: getStackTrace(error)
   future.callbacks.call()
 
-proc clearCallbacks(future: FutureBase) =
+proc clearCallbacks*(future: FutureBase) =
   future.callbacks.function = nil
   future.callbacks.next = nil