diff --git a/osd.c b/osd.c
index a6a4552..42b7d36 100644
--- a/osd.c
+++ b/osd.c
@@ -515,12 +515,12 @@ void cXinelibOsd::Flush(void)
   if (IsTrueColor()) {
 
     LOCK_PIXMAPS;
-    while (cPixmapMemory *pm = RenderPixmaps()) {
+    while (cPixmapMemory *pm = dynamic_cast<cPixmapMemory *>(RenderPixmaps())) {
       int w = pm->ViewPort().Width();
       int h = pm->ViewPort().Height();
       int d = w * sizeof(tColor);
       CmdArgb(Left() + pm->ViewPort().X(), Top() + pm->ViewPort().Y(), w, h, pm->Data(), h * d);
-      delete pm;
+      DestroyPixmap(pm);
     }
 
     return;