diff --git a/debian/postinst b/debian/postinst
index bd2d28bbb266cdb7a8b69c2cc3279a7fa72bf86c..3526b1d520f2097d8401ec100b4a36b27b3df634 100755
--- a/debian/postinst
+++ b/debian/postinst
@@ -55,5 +55,6 @@ fi
             chmod 0664 $filename
         fi
     done
+    chmod 0774 $DAP_PREFIX/bin/*
     
 echo "For start $DAP_APP_NAME - run 'systemctl start $DAP_APP_NAME'"