diff --git a/Xext/sync.c b/Xext/sync.c
index fd2ceb042..262f3f3c0 100644
--- a/Xext/sync.c
+++ b/Xext/sync.c
@@ -70,6 +70,7 @@ PERFORMANCE OF THIS SOFTWARE.
 #include "syncsdk.h"
 #include "protocol-versions.h"
 #include "inputstr.h"
+#include "misync_priv.h"
 
 #include <stdio.h>
 #if !defined(WIN32)
diff --git a/miext/sync/misync.c b/miext/sync/misync.c
index 0931803f6..48234ef8a 100644
--- a/miext/sync/misync.c
+++ b/miext/sync/misync.c
@@ -26,7 +26,7 @@
 #endif
 
 #include "scrnintstr.h"
-#include "misync.h"
+#include "misync_priv.h"
 #include "misyncstr.h"
 
 DevPrivateKeyRec miSyncScreenPrivateKey;
diff --git a/miext/sync/misync.h b/miext/sync/misync.h
index f7082d5ea..4748fa4ae 100644
--- a/miext/sync/misync.h
+++ b/miext/sync/misync.h
@@ -43,7 +43,6 @@ typedef struct _syncScreenFuncs {
     SyncScreenDestroyFenceFunc DestroyFence;
 } SyncScreenFuncsRec, *SyncScreenFuncsPtr;
 
-
 extern _X_EXPORT void
 miSyncScreenCreateFence(ScreenPtr pScreen, SyncFence * pFence,
                         Bool initially_triggered);
@@ -65,11 +64,12 @@ typedef struct _syncFenceFuncs {
 } SyncFenceFuncsRec, *SyncFenceFuncsPtr;
 
 extern _X_EXPORT void
-
 miSyncInitFence(ScreenPtr pScreen, SyncFence * pFence,
                 Bool initially_triggered);
+
 extern _X_EXPORT void
  miSyncDestroyFence(SyncFence * pFence);
+
 extern _X_EXPORT void
  miSyncTriggerFence(SyncFence * pFence);
 
@@ -77,25 +77,4 @@ extern _X_EXPORT SyncScreenFuncsPtr miSyncGetScreenFuncs(ScreenPtr pScreen);
 extern _X_EXPORT Bool
  miSyncSetup(ScreenPtr pScreen);
 
-Bool
-miSyncFenceCheckTriggered(SyncFence * pFence);
-
-void
-miSyncFenceSetTriggered(SyncFence * pFence);
-
-void
-miSyncFenceReset(SyncFence * pFence);
-
-void
-miSyncFenceAddTrigger(SyncTrigger * pTrigger);
-
-void
-miSyncFenceDeleteTrigger(SyncTrigger * pTrigger);
-
-int
-miSyncInitFenceFromFD(DrawablePtr pDraw, SyncFence *pFence, int fd, BOOL initially_triggered);
-
-int
-miSyncFDFromFence(DrawablePtr pDraw, SyncFence *pFence);
-
 #endif                          /* _MISYNC_H_ */
diff --git a/miext/sync/misync_priv.h b/miext/sync/misync_priv.h
new file mode 100644
index 000000000..76ac40d9a
--- /dev/null
+++ b/miext/sync/misync_priv.h
@@ -0,0 +1,33 @@
+/* SPDX-License-Identifier: MIT OR X11
+ *
+ * Copyright © 2024 Enrico Weigelt, metux IT consult <info@metux.net>
+ * Copyright © 2010 NVIDIA Corporation
+ */
+#ifndef _XSERVER_MISYNC_PRIV_H
+#define _XSERVER_MISYNC_PRIV_H
+
+#include "misync.h"
+
+extern DevPrivateKeyRec miSyncScreenPrivateKey;
+
+typedef struct _syncScreenPriv {
+    /* Wrappable sync-specific screen functions */
+    SyncScreenFuncsRec funcs;
+
+    /* Wrapped screen functions */
+    CloseScreenProcPtr CloseScreen;
+} SyncScreenPrivRec, *SyncScreenPrivPtr;
+
+#define SYNC_SCREEN_PRIV(pScreen)                               \
+    (SyncScreenPrivPtr) dixLookupPrivate(&pScreen->devPrivates, \
+                                         &miSyncScreenPrivateKey)
+
+Bool miSyncFenceCheckTriggered(SyncFence * pFence);
+void miSyncFenceSetTriggered(SyncFence * pFence);
+void miSyncFenceReset(SyncFence * pFence);
+void miSyncFenceAddTrigger(SyncTrigger * pTrigger);
+void miSyncFenceDeleteTrigger(SyncTrigger * pTrigger);
+int miSyncInitFenceFromFD(DrawablePtr pDraw, SyncFence *pFence, int fd, BOOL initially_triggered);
+int miSyncFDFromFence(DrawablePtr pDraw, SyncFence *pFence);
+
+#endif /* _XSERVER_MISYNC_PRIV_H */
diff --git a/miext/sync/misyncfd.c b/miext/sync/misyncfd.c
index fecbd0fb9..42a75024d 100644
--- a/miext/sync/misyncfd.c
+++ b/miext/sync/misyncfd.c
@@ -25,7 +25,7 @@
 #endif
 
 #include "scrnintstr.h"
-#include "misync.h"
+#include "misync_priv.h"
 #include "misyncstr.h"
 #include "misyncfd.h"
 #include "pixmapstr.h"
diff --git a/miext/sync/misyncshm.c b/miext/sync/misyncshm.c
index 27bf07db1..e894e5894 100644
--- a/miext/sync/misyncshm.c
+++ b/miext/sync/misyncshm.c
@@ -25,7 +25,7 @@
 #endif
 
 #include "scrnintstr.h"
-#include "misync.h"
+#include "misync_priv.h"
 #include "misyncstr.h"
 #include "misyncshm.h"
 #include "misyncfd.h"
diff --git a/miext/sync/misyncstr.h b/miext/sync/misyncstr.h
index 490cf6194..21cb0b257 100644
--- a/miext/sync/misyncstr.h
+++ b/miext/sync/misyncstr.h
@@ -78,18 +78,4 @@ typedef struct _SyncTriggerList {
     struct _SyncTriggerList *next;
 } SyncTriggerList;
 
-extern DevPrivateKeyRec miSyncScreenPrivateKey;
-
-#define SYNC_SCREEN_PRIV(pScreen) 				\
-    (SyncScreenPrivPtr) dixLookupPrivate(&pScreen->devPrivates,	\
-					 &miSyncScreenPrivateKey)
-
-typedef struct _syncScreenPriv {
-    /* Wrappable sync-specific screen functions */
-    SyncScreenFuncsRec funcs;
-
-    /* Wrapped screen functions */
-    CloseScreenProcPtr CloseScreen;
-} SyncScreenPrivRec, *SyncScreenPrivPtr;
-
 #endif                          /* _MISYNCSTR_H_ */