diff --git a/dlls/winex11.drv/bitblt.c b/dlls/winex11.drv/bitblt.c
index 95600b0cd26..880d71ff740 100644
--- a/dlls/winex11.drv/bitblt.c
+++ b/dlls/winex11.drv/bitblt.c
@@ -1988,9 +1988,11 @@ DWORD X11DRV_GetImage( PHYSDEV dev, HBITMAP hbitmap, BITMAPINFO *info,
         GetObjectW( hbitmap, sizeof(bm), &bm );
         width = min( width, bm.bmWidth - x );
         height = min( height, bm.bmHeight - y );
+        X11DRV_DIB_Lock( bitmap, DIB_Status_GdiMod );
         wine_tsx11_lock();
         image = XGetImage( gdi_display, bitmap->pixmap, x, y, width, height, AllPlanes, ZPixmap );
         wine_tsx11_unlock();
+        X11DRV_DIB_Unlock( bitmap, TRUE );
     }
     else if (GetObjectType( dev->hdc ) == OBJ_MEMDC)
     {
diff --git a/dlls/winex11.drv/dib.c b/dlls/winex11.drv/dib.c
index b2e1c5f9c54..a1176d95342 100644
--- a/dlls/winex11.drv/dib.c
+++ b/dlls/winex11.drv/dib.c
@@ -101,8 +101,6 @@ enum Rle_EscapeCodes
 
 
 static INT X11DRV_DIB_Coerce(X_PHYSBITMAP *,INT);
-static INT X11DRV_DIB_Lock(X_PHYSBITMAP *,INT);
-static void X11DRV_DIB_Unlock(X_PHYSBITMAP *,BOOL);
 
 /* 
   Some of the following helper functions are duplicated in
@@ -4576,7 +4574,7 @@ static INT X11DRV_DIB_Coerce(X_PHYSBITMAP *physBitmap, INT req)
 /***********************************************************************
  *           X11DRV_DIB_Lock
  */
-static INT X11DRV_DIB_Lock(X_PHYSBITMAP *physBitmap, INT req)
+INT X11DRV_DIB_Lock(X_PHYSBITMAP *physBitmap, INT req)
 {
     INT ret = DIB_Status_None;
 
@@ -4592,7 +4590,7 @@ static INT X11DRV_DIB_Lock(X_PHYSBITMAP *physBitmap, INT req)
 /***********************************************************************
  *           X11DRV_DIB_Unlock
  */
-static void X11DRV_DIB_Unlock(X_PHYSBITMAP *physBitmap, BOOL commit)
+void X11DRV_DIB_Unlock(X_PHYSBITMAP *physBitmap, BOOL commit)
 {
     if (!physBitmap->image) return;  /* not a DIB section */
     switch (physBitmap->status)
diff --git a/dlls/winex11.drv/x11drv.h b/dlls/winex11.drv/x11drv.h
index d1fbbf3505f..5c98d2e32e3 100644
--- a/dlls/winex11.drv/x11drv.h
+++ b/dlls/winex11.drv/x11drv.h
@@ -481,6 +481,8 @@ extern INT X11DRV_DIB_MaskToShift(DWORD mask) DECLSPEC_HIDDEN;
 extern INT X11DRV_CoerceDIBSection(X11DRV_PDEVICE *physDev,INT) DECLSPEC_HIDDEN;
 extern INT X11DRV_LockDIBSection(X11DRV_PDEVICE *physDev,INT) DECLSPEC_HIDDEN;
 extern void X11DRV_UnlockDIBSection(X11DRV_PDEVICE *physDev,BOOL) DECLSPEC_HIDDEN;
+extern INT X11DRV_DIB_Lock(X_PHYSBITMAP *,INT) DECLSPEC_HIDDEN;
+extern void X11DRV_DIB_Unlock(X_PHYSBITMAP *,BOOL) DECLSPEC_HIDDEN;
 
 extern void X11DRV_DIB_DeleteDIBSection(X_PHYSBITMAP *physBitmap, DIBSECTION *dib) DECLSPEC_HIDDEN;
 extern void X11DRV_DIB_CopyDIBSection(X11DRV_PDEVICE *physDevSrc, X11DRV_PDEVICE *physDevDst,