diff --git a/src/catch2/internal/catch_run_context.cpp b/src/catch2/internal/catch_run_context.cpp
index 92d6d988..08086b28 100644
--- a/src/catch2/internal/catch_run_context.cpp
+++ b/src/catch2/internal/catch_run_context.cpp
@@ -34,7 +34,7 @@ namespace Catch {
             {}
             ~GeneratorTracker() override;
 
-            static GeneratorTracker* acquire( TrackerContext& ctx, TestCaseTracking::NameAndLocationRef nameAndLocation ) {
+            static GeneratorTracker* acquire( TrackerContext& ctx, TestCaseTracking::NameAndLocationRef const& nameAndLocation ) {
                 GeneratorTracker* tracker;
 
                 ITracker& currentTracker = ctx.currentTracker();
diff --git a/src/catch2/internal/catch_test_case_tracker.cpp b/src/catch2/internal/catch_test_case_tracker.cpp
index a9d6614f..c48932b1 100644
--- a/src/catch2/internal/catch_test_case_tracker.cpp
+++ b/src/catch2/internal/catch_test_case_tracker.cpp
@@ -38,7 +38,7 @@ namespace TestCaseTracking {
         m_children.push_back( CATCH_MOVE(child) );
     }
 
-    ITracker* ITracker::findChild( NameAndLocationRef nameAndLocation ) {
+    ITracker* ITracker::findChild( NameAndLocationRef const& nameAndLocation ) {
         auto it = std::find_if(
             m_children.begin(),
             m_children.end(),
@@ -177,7 +177,7 @@ namespace TestCaseTracking {
 
     bool SectionTracker::isSectionTracker() const { return true; }
 
-    SectionTracker& SectionTracker::acquire( TrackerContext& ctx, NameAndLocationRef nameAndLocation ) {
+    SectionTracker& SectionTracker::acquire( TrackerContext& ctx, NameAndLocationRef const& nameAndLocation ) {
         SectionTracker* tracker;
 
         ITracker& currentTracker = ctx.currentTracker();
diff --git a/src/catch2/internal/catch_test_case_tracker.hpp b/src/catch2/internal/catch_test_case_tracker.hpp
index 8252558a..506e42de 100644
--- a/src/catch2/internal/catch_test_case_tracker.hpp
+++ b/src/catch2/internal/catch_test_case_tracker.hpp
@@ -49,11 +49,11 @@ namespace TestCaseTracking {
             name( name_ ), location( location_ ) {}
 
         friend bool operator==( NameAndLocation const& lhs,
-                                NameAndLocationRef rhs ) {
+                                NameAndLocationRef const& rhs ) {
             return StringRef( lhs.name ) == rhs.name &&
                    lhs.location == rhs.location;
         }
-        friend bool operator==( NameAndLocationRef lhs,
+        friend bool operator==( NameAndLocationRef const& lhs,
                                 NameAndLocation const& rhs ) {
             return rhs == lhs;
         }
@@ -125,7 +125,7 @@ namespace TestCaseTracking {
          *
          * Returns nullptr if not found.
          */
-        ITracker* findChild( NameAndLocationRef nameAndLocation );
+        ITracker* findChild( NameAndLocationRef const& nameAndLocation );
         //! Have any children been added?
         bool hasChildren() const {
             return !m_children.empty();
@@ -212,7 +212,7 @@ namespace TestCaseTracking {
 
         bool isComplete() const override;
 
-        static SectionTracker& acquire( TrackerContext& ctx, NameAndLocationRef nameAndLocation );
+        static SectionTracker& acquire( TrackerContext& ctx, NameAndLocationRef const& nameAndLocation );
 
         void tryOpen();