diff --git a/src/integretychecker.cpp b/src/integretychecker.cpp
index e5d9d6c..b1e6667 100644
--- a/src/integretychecker.cpp
+++ b/src/integretychecker.cpp
@@ -79,6 +79,11 @@ std::string IntegretyCheck::generateHashList(const std::string &app) {
     if (f.is_directory()) {
       // skip directory, iterator is recursive
     } else {
+      // skip may already existing hash file
+      const std::string filename = f.path().filename().string();
+      if (filename == HASH_FILE) {
+        continue;
+      }
       // strip appPath
       std::string filepath = f.path().string();
       filepath.erase(0, p.size() + 1);