diff --git a/utils/string.go b/utils/string.go
index 8b091d8d..032e1ac3 100644
--- a/utils/string.go
+++ b/utils/string.go
@@ -50,7 +50,11 @@ func ConvertSubVersionToInt(str string) int32 {
 
 // B2S converts byte slice to a string without memory allocation.
 func B2S(b []byte) string {
-	return unsafe.String(&b[0], len(b))
+	size := len(b)
+	if size == 0 {
+		return ""
+	}
+	return unsafe.String(&b[0], size)
 }
 
 // S2B converts string to a byte slice without memory allocation.