diff --git a/lib/mu-query-results.hh b/lib/mu-query-results.hh
index 33611707..479bd6c2 100644
--- a/lib/mu-query-results.hh
+++ b/lib/mu-query-results.hh
@@ -109,6 +109,7 @@ QueryMatch::has_flag(QueryMatch::Flags flag) const
 	return any_of(flags & flag);
 }
 
+/* LCOV_EXCL_START */
 static inline std::ostream&
 operator<<(std::ostream& os, QueryMatch::Flags mflags)
 {
@@ -140,8 +141,6 @@ operator<<(std::ostream& os, QueryMatch::Flags mflags)
 	return os;
 }
 
-using QueryMatches = std::unordered_map<Xapian::docid, QueryMatch>;
-
 inline std::ostream&
 operator<<(std::ostream& os, const QueryMatch& qmatch)
 {
@@ -151,6 +150,10 @@ operator<<(std::ostream& os, const QueryMatch& qmatch)
 
 	return os;
 }
+/* LCOV_EXCL_STOP*/
+
+using QueryMatches = std::unordered_map<Xapian::docid, QueryMatch>;
+
 
 ///
 /// This is a view over the Xapian::MSet, which can optionally filter unreadable
diff --git a/lib/mu-query-threads.cc b/lib/mu-query-threads.cc
index 4bb49645..6d992816 100644
--- a/lib/mu-query-threads.cc
+++ b/lib/mu-query-threads.cc
@@ -107,6 +107,7 @@ struct Container {
 using Containers   = Container::Containers;
 using ContainerVec = Container::ContainerVec;
 
+/* LCOV_EXCL_START */
 static std::ostream&
 operator<<(std::ostream& os, const Container& container)
 {
@@ -125,6 +126,7 @@ operator<<(std::ostream& os, const Container& container)
 
 	return os;
 }
+/* LCOV_EXCL_STOP */
 
 using IdTable  = std::unordered_map<std::string, Container>;
 using DupTable = std::multimap<std::string, Container>;
@@ -534,6 +536,7 @@ sort_siblings(IdTable& id_table, bool descending)
 	update_containers(root_vec, descending, id_table.size());
 }
 
+/* LCOV_EXCL_START */
 static std::ostream&
 operator<<(std::ostream& os, const IdTable& id_table)
 {
@@ -559,6 +562,7 @@ operator<<(std::ostream& os, const IdTable& id_table)
 	}
 	return os;
 }
+/* LCOV_EXCL_STOP */
 
 template <typename Results>
 static void
diff --git a/lib/mu-server.cc b/lib/mu-server.cc
index c2e19409..8ef1d5f0 100644
--- a/lib/mu-server.cc
+++ b/lib/mu-server.cc
@@ -50,6 +50,8 @@
 
 using namespace Mu;
 
+/* LCOV_EXCL_START */
+
 /// output stream to _either_ a file or to a stringstream
 struct OutputStream {
 	/**
@@ -1160,3 +1162,5 @@ Server::invoke(const std::string& expr) noexcept
 {
 	return priv_->invoke(expr);
 }
+
+/* LCOV_EXCL_STOP */
diff --git a/lib/mu-server.hh b/lib/mu-server.hh
index 28d2da3f..0ceaa68f 100644
--- a/lib/mu-server.hh
+++ b/lib/mu-server.hh
@@ -27,6 +27,8 @@
 #include <utils/mu-utils.hh>
 #include <mu-store.hh>
 
+/* LCOV_EXCL_START */
+
 namespace Mu {
 
 /**
@@ -82,5 +84,6 @@ MU_ENABLE_BITOPS(Server::OutputFlags);
 
 } // namespace Mu
 
+/* LCOV_EXCL_STOP */
 
 #endif /* MU_SERVER_HH__ */