diff --git a/rsload.go b/rsload.go
index c723175..8f615ed 100644
--- a/rsload.go
+++ b/rsload.go
@@ -48,6 +48,15 @@ func main() {
 
 	if options.password != "" {
 		fmt.Fprintf(conn, "*2\r\n$4\r\nauth\r\n$%d\r\n%s\r\n", len(options.password), options.password)
+		v, err := readValue(conn)
+		if err != nil {
+			fmt.Printf("unable to auth: %v\n", err)
+			os.Exit(1)
+		}
+		if !isOK(v) {
+			fmt.Printf("not OK: %v\n", v)
+			os.Exit(1)
+		}
 	}
 
 	infile, err := os.Open(fname)
diff --git a/values.go b/values.go
index 4694880..f74ed8c 100644
--- a/values.go
+++ b/values.go
@@ -19,6 +19,14 @@ type value interface {
 	Write(io.Writer) (int, error)
 }
 
+func isOK(v value) bool {
+	vv, ok := v.(String)
+	if !ok {
+		return false
+	}
+	return vv == "OK"
+}
+
 func streamValues(r io.Reader, c chan value, e chan error) {
 	defer close(c)
 	defer close(e)