diff --git a/sane/scanner.cpp b/sane/scanner.cpp
index 82ebc9f..7207870 100644
--- a/sane/scanner.cpp
+++ b/sane/scanner.cpp
@@ -623,6 +623,10 @@ bool scanner::is_belong_serial(int vid, int pid, SCANNERID serial)
 			return GET_SCANNER_VID(serial) == vid && GET_SCANNER_PID(serial) == pid;
 		}
 	}
+	else if (vid == PRODUCT_VENDOR_ZG)
+	{
+		return GET_SCANNER_VID(serial) == vid && GET_SCANNER_PID(serial) == pid;
+	}
 
 	return true;
 }