diff --git a/lib/compat/statusdatawriter.cpp b/lib/compat/statusdatawriter.cpp
index a28e1ceb5..673a981c4 100644
--- a/lib/compat/statusdatawriter.cpp
+++ b/lib/compat/statusdatawriter.cpp
@@ -531,7 +531,7 @@ void StatusDataWriter::DumpCustomAttributes(std::ostream& fp, const CustomVarObj
 			value = JsonEncode(kv.second);
 			is_json = true;
 		} else
-			value = kv.second;
+			value = CompatUtility::EscapeString(kv.second);
 
 		fp << "\t" "_" << kv.first << "\t" << value << "\n";
 	}