diff --git a/app/stdio_android.go b/app/stdio_android.go
index 0957958..6628403 100644
--- a/app/stdio_android.go
+++ b/app/stdio_android.go
@@ -58,6 +58,8 @@ func lineLog(f *os.File, priority C.int) {
 
 func init() {
 	log.SetOutput(infoWriter{})
+	// android logcat includes all of log.LstdFlags
+	log.SetFlags(log.Flags() &^ log.LstdFlags)
 
 	r, w, err := os.Pipe()
 	if err != nil {