diff --git a/drivers/clk/exynos/clk-pll.h b/drivers/clk/exynos/clk-pll.h
index c79aac4425..7b7af5e676 100644
--- a/drivers/clk/exynos/clk-pll.h
+++ b/drivers/clk/exynos/clk-pll.h
@@ -5,4 +5,9 @@
  * Thomas Abraham <thomas.ab@samsung.com>
  */
 
+#ifndef __EXYNOS_CLK_PLL_H
+#define __EXYNOS_CLK_PLL_H
+
 unsigned long pll145x_get_rate(unsigned int *con1, unsigned long fin_freq);
+
+#endif /* __EXYNOS_CLK_PLL_H */