diff --git a/stdservice/console_log.go b/stdservice/console_log.go
index c5d2d14..185a2b0 100644
--- a/stdservice/console_log.go
+++ b/stdservice/console_log.go
@@ -5,14 +5,14 @@ import "fmt"
 type ConsoleLogger struct{}
 
 func (ConsoleLogger) LogError(format string, a ...interface{}) error {
-	fmt.Printf(format, a...)
+	fmt.Printf("E: "+format, a...)
 	return nil
 }
 func (ConsoleLogger) LogWarning(format string, a ...interface{}) error {
-	fmt.Printf(format, a...)
+	fmt.Printf("W: "+format, a...)
 	return nil
 }
 func (ConsoleLogger) LogInfo(format string, a ...interface{}) error {
-	fmt.Printf(format, a...)
+	fmt.Printf("I: "+format, a...)
 	return nil
 }