diff --git a/Source/cmFileMonitor.cxx b/Source/cmFileMonitor.cxx
index 9e660356df..ed794c37a8 100644
--- a/Source/cmFileMonitor.cxx
+++ b/Source/cmFileMonitor.cxx
@@ -236,7 +236,7 @@ public:
                 cmFileMonitor::Callback cb)
     : Parent(p)
     , PathSegment(ps)
-    , CbList({ cb })
+    , CbList({ std::move(cb) })
   {
     assert(p);
     assert(!ps.empty());
diff --git a/Source/cmListFileCache.cxx b/Source/cmListFileCache.cxx
index 16297f37f0..929b1cde82 100644
--- a/Source/cmListFileCache.cxx
+++ b/Source/cmListFileCache.cxx
@@ -16,7 +16,7 @@
 
 struct cmListFileParser
 {
-  cmListFileParser(cmListFile* lf, cmListFileBacktrace lfbt,
+  cmListFileParser(cmListFile* lf, cmListFileBacktrace const& lfbt,
                    cmMessenger* messenger, const char* filename);
   ~cmListFileParser();
   void IssueFileOpenError(std::string const& text) const;
@@ -39,7 +39,8 @@ struct cmListFileParser
   } Separation;
 };
 
-cmListFileParser::cmListFileParser(cmListFile* lf, cmListFileBacktrace lfbt,
+cmListFileParser::cmListFileParser(cmListFile* lf,
+                                   cmListFileBacktrace const& lfbt,
                                    cmMessenger* messenger,
                                    const char* filename)
   : ListFile(lf)