diff --git a/cmd/protoc-gen-go-grpc/README.md b/cmd/protoc-gen-go-grpc/README.md
index 4758125de0d2..a2d4d010212a 100644
--- a/cmd/protoc-gen-go-grpc/README.md
+++ b/cmd/protoc-gen-go-grpc/README.md
@@ -14,7 +14,7 @@ To restore this behavior, set the option `require_unimplemented_servers=false`.
 E.g.:
 
 ```
-  protoc --go-grpc_out=require_unimplemented_servers=false[,other options...]:. \
+  protoc --go-grpc_out=. --go-grpc_opt=require_unimplemented_servers=false[,other options...] \
 ```
 
 Note that this is not recommended, and the option is only provided to restore