diff --git a/crossplane/function/proto/v1/run_function.proto b/crossplane/function/proto/v1/run_function.proto
index 557fd34..a6ca33a 100644
--- a/crossplane/function/proto/v1/run_function.proto
+++ b/crossplane/function/proto/v1/run_function.proto
@@ -247,7 +247,7 @@ message Resource {
   // the observed connection details of a composite or composed resource.
   //
   // * A function should set this field in a RunFunctionResponse to indicate the
-  // desired connection details of the XR.
+  // desired connection details of legacy XRs. For modern XRs, this will be ignored.
   //
   // * A function should not set this field in a RunFunctionResponse to indicate
   // the desired connection details of a composed resource. This will be
diff --git a/crossplane/function/proto/v1beta1/run_function.proto b/crossplane/function/proto/v1beta1/run_function.proto
index f0ab5b6..e53ded4 100644
--- a/crossplane/function/proto/v1beta1/run_function.proto
+++ b/crossplane/function/proto/v1beta1/run_function.proto
@@ -249,7 +249,7 @@ message Resource {
   // the observed connection details of a composite or composed resource.
   //
   // * A function should set this field in a RunFunctionResponse to indicate the
-  // desired connection details of the XR.
+  // desired connection details of legacy XRs. For modern XRs, this will be ignored.
   //
   // * A function should not set this field in a RunFunctionResponse to indicate
   // the desired connection details of a composed resource. This will be