diff --git a/lib/query/mu-parser.hh b/lib/query/mu-parser.hh
index 215d3dd8..0c2ffe9e 100644
--- a/lib/query/mu-parser.hh
+++ b/lib/query/mu-parser.hh
@@ -39,8 +39,8 @@ namespace Mu {
  *
  */
 struct Warning {
-	size_t			pos; /**< pos in string */
-	const std::string	msg; /**< warning message */
+	size_t			pos{}; /**< pos in string */
+	const std::string	msg;   /**< warning message */
 
 	/**
 	 * operator==
diff --git a/lib/utils/test-utils.cc b/lib/utils/test-utils.cc
index 27ef3873..b1f666e5 100644
--- a/lib/utils/test-utils.cc
+++ b/lib/utils/test-utils.cc
@@ -30,7 +30,7 @@ using namespace Mu;
 
 struct Case {
 	const std::string	expr;
-	bool			is_first;
+	bool			is_first{};
 	const std::string	expected;
 };
 using CaseVec = std::vector<Case>;