diff --git a/src/core/function.rs b/src/core/function.rs
index a5a9c5f..83c0789 100644
--- a/src/core/function.rs
+++ b/src/core/function.rs
@@ -26,7 +26,8 @@ impl Function {
 
     #[async(boxed)]
     pub fn call(self, a: Arguments) -> Result {
-        Ok(await!((self.function)(await!(self.signature.bind(a))?))?)
+        let f = self.function; // rust-lang/rust#48048
+        Ok(await!(f(await!(self.signature.bind(a))?))?)
     }
 }