diff --git a/linkerd/proxy/api-resolve/src/resolve.rs b/linkerd/proxy/api-resolve/src/resolve.rs
index 1a23b8292d..56c6b60793 100644
--- a/linkerd/proxy/api-resolve/src/resolve.rs
+++ b/linkerd/proxy/api-resolve/src/resolve.rs
@@ -24,7 +24,7 @@ impl<S> Resolve<S>
 where
     S: GrpcService<BoxBody> + Clone + Send + 'static,
     S::Error: Into<Error> + Send,
-    S::ResponseBody: Default + Body<Data = tonic::codegen::Bytes> + Send + 'static,
+    S::ResponseBody: Body<Data = tonic::codegen::Bytes> + Send + 'static,
     <S::ResponseBody as Body>::Error: Into<Error> + Send,
     S::Future: Send,
 {
@@ -48,7 +48,7 @@ where
     T: Param<ConcreteAddr>,
     S: GrpcService<BoxBody> + Clone + Send + 'static,
     S::Error: Into<Error> + Send,
-    S::ResponseBody: Default + Body<Data = tonic::codegen::Bytes> + Send + 'static,
+    S::ResponseBody: Body<Data = tonic::codegen::Bytes> + Send + 'static,
     <S::ResponseBody as Body>::Error: Into<Error> + Send,
     S::Future: Send,
 {