diff --git a/userspace/engine/rule_loader_compiler.cpp b/userspace/engine/rule_loader_compiler.cpp
index ea40f647..350b471e 100644
--- a/userspace/engine/rule_loader_compiler.cpp
+++ b/userspace/engine/rule_loader_compiler.cpp
@@ -76,6 +76,7 @@ static void build_rule_exception_infos(
 	std::string& condition)
 {
 	std::string tmp;
+	condition = "(" + condition + ")";
 	for (const auto &ex : exceptions)
 	{
 		std::string icond;