diff --git a/cmd/lncli/cmd_invoice.go b/cmd/lncli/cmd_invoice.go
index cdb177780..4053a8d7d 100644
--- a/cmd/lncli/cmd_invoice.go
+++ b/cmd/lncli/cmd_invoice.go
@@ -64,7 +64,10 @@ var addInvoiceCommand = cli.Command{
 			Name: "private",
 			Usage: "encode routing hints in the invoice with " +
 				"private channels in order to assist the " +
-				"payer in reaching you",
+				"payer in reaching you. If amt and amt_msat " +
+				"are zero, a large number of hints with " +
+				"these channels can be included, which " +
+				"might not be desirable.",
 		},
 		cli.BoolFlag{
 			Name: "amp",
diff --git a/lnrpc/invoicesrpc/invoices.swagger.json b/lnrpc/invoicesrpc/invoices.swagger.json
index f220d5988..ff3294e70 100644
--- a/lnrpc/invoicesrpc/invoices.swagger.json
+++ b/lnrpc/invoicesrpc/invoices.swagger.json
@@ -514,7 +514,7 @@
         },
         "private": {
           "type": "boolean",
-          "description": "Whether this invoice should include routing hints for private channels."
+          "description": "Whether this invoice should include routing hints for private channels.\nNote: When enabled, if value and value_msat are zero, a large number of\nhints with these channels can be included, which might not be desirable."
         },
         "add_index": {
           "type": "string",
diff --git a/lnrpc/lightning.pb.go b/lnrpc/lightning.pb.go
index 767198040..fe97d362c 100644
--- a/lnrpc/lightning.pb.go
+++ b/lnrpc/lightning.pb.go
@@ -11640,6 +11640,8 @@ type Invoice struct {
 	// invoice's destination.
 	RouteHints []*RouteHint `protobuf:"bytes,14,rep,name=route_hints,json=routeHints,proto3" json:"route_hints,omitempty"`
 	// Whether this invoice should include routing hints for private channels.
+	// Note: When enabled, if value and value_msat are zero, a large number of
+	// hints with these channels can be included, which might not be desirable.
 	Private bool `protobuf:"varint,15,opt,name=private,proto3" json:"private,omitempty"`
 	// The "add" index of this invoice. Each newly created invoice will increment
 	// this index making it monotonically increasing. Callers to the
diff --git a/lnrpc/lightning.proto b/lnrpc/lightning.proto
index aa3138690..73cb4f72b 100644
--- a/lnrpc/lightning.proto
+++ b/lnrpc/lightning.proto
@@ -3401,6 +3401,8 @@ message Invoice {
     repeated RouteHint route_hints = 14;
 
     // Whether this invoice should include routing hints for private channels.
+    // Note: When enabled, if value and value_msat are zero, a large number of
+    // hints with these channels can be included, which might not be desirable.
     bool private = 15;
 
     /*
diff --git a/lnrpc/lightning.swagger.json b/lnrpc/lightning.swagger.json
index 0b0f86adc..24223fad1 100644
--- a/lnrpc/lightning.swagger.json
+++ b/lnrpc/lightning.swagger.json
@@ -5048,7 +5048,7 @@
         },
         "private": {
           "type": "boolean",
-          "description": "Whether this invoice should include routing hints for private channels."
+          "description": "Whether this invoice should include routing hints for private channels.\nNote: When enabled, if value and value_msat are zero, a large number of\nhints with these channels can be included, which might not be desirable."
         },
         "add_index": {
           "type": "string",