diff --git a/drivers/video/cg3.c b/drivers/video/cg3.c
index 767c850..f042428 100644
--- a/drivers/video/cg3.c
+++ b/drivers/video/cg3.c
@@ -266,7 +266,7 @@
 static void __devinit cg3_rdi_maybe_fixup_var(struct fb_var_screeninfo *var,
 					      struct device_node *dp)
 {
-	char *params;
+	const char *params;
 	char *p;
 	int ww, hh;