diff --git a/tools/dkr_assets_tool_classes/common/util/fileHelper.h b/tools/dkr_assets_tool_classes/common/util/fileHelper.h
index e76af944..4cde0f43 100644
--- a/tools/dkr_assets_tool_classes/common/util/fileHelper.h
+++ b/tools/dkr_assets_tool_classes/common/util/fileHelper.h
@@ -7,6 +7,7 @@
 #include <algorithm>
 #include <iterator>
 #include <iostream>
+#include <iomanip>
 #include <openssl/md5.h>
 
 // C++17