1 files changed, 5 insertions, 3 deletions
diff --git a/Source/cmQtAutoGenInitializer.cxx b/Source/cmQtAutoGenInitializer.cxx
index 607afbf..7cfdeba 100644
--- a/Source/cmQtAutoGenInitializer.cxx
+++ b/Source/cmQtAutoGenInitializer.cxx
@@ -380,13 +380,15 @@ bool cmQtAutoGenInitializer::InitMoc()
 
   // Moc includes
   {
-    auto GetIncludeDirs = [this,
-                           localGen](std::string const& cfg) -> std::string {
+    bool const appendImplicit = (this->QtVersionMajor == "5");
+    auto GetIncludeDirs =
+      [this, localGen, appendImplicit](std::string const& cfg) -> std::string {
       // Get the include dirs for this target, without stripping the implicit
       // include dirs off, see
       // https://gitlab.kitware.com/cmake/cmake/issues/13667
       std::vector<std::string> dirs;
-      localGen->GetIncludeDirectories(dirs, this->Target, "CXX", cfg, false);
+      localGen->GetIncludeDirectories(dirs, this->Target, "CXX", cfg, false,
+                                      appendImplicit);
       return cmJoin(dirs, ";");
     };