diff --git a/Source/cmLocalGenerator.cxx b/Source/cmLocalGenerator.cxx
index c43876c4e7..bdc0358fde 100644
--- a/Source/cmLocalGenerator.cxx
+++ b/Source/cmLocalGenerator.cxx
@@ -2387,13 +2387,9 @@ void cmLocalGenerator::AddPchDependencies(cmGeneratorTarget* target)
               file << "endif()\n";
             }
 
-            cmCustomCommandLines commandLines;
-            cmCustomCommandLine currentLine;
-            currentLine.push_back(cmSystemTools::GetCMakeCommand());
-            currentLine.push_back(cmStrCat("-DPDB_PREFIX=", pdb_prefix));
-            currentLine.push_back("-P");
-            currentLine.push_back(copy_script);
-            commandLines.push_back(std::move(currentLine));
+            cmCustomCommandLines commandLines = cmMakeSingleCommandLine(
+              { cmSystemTools::GetCMakeCommand(),
+                cmStrCat("-DPDB_PREFIX=", pdb_prefix), "-P", copy_script });
 
             const std::string no_main_dependency;
             const std::vector<std::string> no_deps;
diff --git a/bootstrap b/bootstrap
index 4432d498ee..8606dda661 100755
--- a/bootstrap
+++ b/bootstrap
@@ -294,6 +294,7 @@ CMAKE_CXX_SOURCES="\
   cmCreateTestSourceList \
   cmCustomCommand \
   cmCustomCommandGenerator \
+  cmCustomCommandLines \
   cmDefinePropertyCommand \
   cmDefinitions \
   cmDepends \