diff --git a/drivers/clk/clk-mux.c b/drivers/clk/clk-mux.c
index 5424488..bd5e598 100644
--- a/drivers/clk/clk-mux.c
+++ b/drivers/clk/clk-mux.c
@@ -89,7 +89,7 @@
 EXPORT_SYMBOL_GPL(clk_mux_ops);
 
 struct clk *clk_register_mux(struct device *dev, const char *name,
-		char **parent_names, u8 num_parents, unsigned long flags,
+		const char **parent_names, u8 num_parents, unsigned long flags,
 		void __iomem *reg, u8 shift, u8 width,
 		u8 clk_mux_flags, spinlock_t *lock)
 {