diff --git a/src/android/com/cescit/integrity/BaseIntegrity.java b/src/android/com/cescit/integrity/BaseIntegrity.java
index ac3fd5b..436bddd 100644
--- a/src/android/com/cescit/integrity/BaseIntegrity.java
+++ b/src/android/com/cescit/integrity/BaseIntegrity.java
@@ -86,7 +86,7 @@ class BaseIntegrity {
       Signature[] signatures = packageInfo.signatures;
       Signature sign = signatures[0];
       byte[] signByte = sign.toByteArray();
-      System.err.println("sing hash: "+ getHash(signByte));
+      // System.err.println("sing hash: "+ getHash(signByte));
       nowHashList.put("apk", getHash(signByte));
     } catch (PackageManager.NameNotFoundException | IOException | NoSuchAlgorithmException e) {
     }