diff --git a/common/ScanResultGenerator.cpp b/common/ScanResultGenerator.cpp
index 3cc19bf1..f9256ffa 100644
--- a/common/ScanResultGenerator.cpp
+++ b/common/ScanResultGenerator.cpp
@@ -72,7 +72,10 @@ ScanResult ScanResultGenerator::GetResult() const {
     std::unique_lock ul(m);
     ScanResult ret;
     ret.file_prefix = file_prefix;
-    ret.images = v;
+    for (const auto &e: v) {
+        if (e.number >= 0)
+            ret.images.push_back(e);
+    }
     return ret;
 }