diff --git a/lib/compat/statusdatawriter.cpp b/lib/compat/statusdatawriter.cpp
index 75b188a2d..2e3338041 100644
--- a/lib/compat/statusdatawriter.cpp
+++ b/lib/compat/statusdatawriter.cpp
@@ -530,7 +530,7 @@ 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";
 	}