diff --git a/packages/runtime-core/src/apiSetupHelpers.ts b/packages/runtime-core/src/apiSetupHelpers.ts
index 155c8cd19cc..a8b7fcdef31 100644
--- a/packages/runtime-core/src/apiSetupHelpers.ts
+++ b/packages/runtime-core/src/apiSetupHelpers.ts
@@ -139,7 +139,7 @@ type InferDefault<P, T> = T extends
   | boolean
   | symbol
   | Function
-  ? T
+  ? T | ((props: P) => T)
   : (props: P) => T
 
 type PropsWithDefaults<Base, Defaults> = Base & {