diff --git a/drivers/media/dvb/frontends/stb0899_drv.c b/drivers/media/dvb/frontends/stb0899_drv.c
index 4596119..4dc741d 100644
--- a/drivers/media/dvb/frontends/stb0899_drv.c
+++ b/drivers/media/dvb/frontends/stb0899_drv.c
@@ -583,7 +583,7 @@
 static int stb0899_postproc(struct stb0899_state *state, u8 ctl, int enable)
 {
 	struct stb0899_config *config		= state->config;
-	struct stb0899_postproc	*postproc	= config->postproc;
+	const struct stb0899_postproc *postproc	= config->postproc;
 
 	/* post process event */
 	if (postproc) {