diff --git a/src/corelib/global/qcompilerdetection.h b/src/corelib/global/qcompilerdetection.h
index acbd1c188a0..64154bc0c85 100644
--- a/src/corelib/global/qcompilerdetection.h
+++ b/src/corelib/global/qcompilerdetection.h
@@ -6,6 +6,11 @@
 # include <QtCore/qglobal.h>
 #endif
 
+#if 0
+#pragma qt_sync_skip_header_check
+#pragma qt_sync_stop_processing
+#endif
+
 #ifndef QCOMPILERDETECTION_H
 #define QCOMPILERDETECTION_H
 
diff --git a/src/corelib/global/qprocessordetection.h b/src/corelib/global/qprocessordetection.h
index fb93a7d06b5..417b6cb508f 100644
--- a/src/corelib/global/qprocessordetection.h
+++ b/src/corelib/global/qprocessordetection.h
@@ -6,6 +6,11 @@
 # include <QtCore/qglobal.h>
 #endif
 
+#if 0
+#pragma qt_sync_skip_header_check
+#pragma qt_sync_stop_processing
+#endif
+
 #ifndef QPROCESSORDETECTION_H
 #define QPROCESSORDETECTION_H
 
diff --git a/src/corelib/global/qsystemdetection.h b/src/corelib/global/qsystemdetection.h
index cbbe613e40c..a4cc20b5400 100644
--- a/src/corelib/global/qsystemdetection.h
+++ b/src/corelib/global/qsystemdetection.h
@@ -6,6 +6,11 @@
 # include <QtCore/qglobal.h>
 #endif
 
+#if 0
+#pragma qt_sync_skip_header_check
+#pragma qt_sync_stop_processing
+#endif
+
 #ifndef QSYSTEMDETECTION_H
 #define QSYSTEMDETECTION_H