diff --git a/arch/arm/mach-mediatek/mt7629/init.c b/arch/arm/mach-mediatek/mt7629/init.c
index 7cb8b72c364..ff027ed03ef 100644
--- a/arch/arm/mach-mediatek/mt7629/init.c
+++ b/arch/arm/mach-mediatek/mt7629/init.c
@@ -27,7 +27,7 @@
 
 DECLARE_GLOBAL_DATA_PTR;
 
-int mtk_pll_early_init(void)
+static int mtk_pll_early_init(void)
 {
 	unsigned long pll_rates[] = {
 		[CLK_APMIXED_ARMPLL] = 1250000000,
diff --git a/arch/arm/mach-mediatek/mt8516/init.c b/arch/arm/mach-mediatek/mt8516/init.c
index 892bd441a33..82f8c509745 100644
--- a/arch/arm/mach-mediatek/mt8516/init.c
+++ b/arch/arm/mach-mediatek/mt8516/init.c
@@ -40,7 +40,7 @@ int dram_init_banksize(void)
 	return 0;
 }
 
-int mtk_pll_early_init(void)
+static int mtk_pll_early_init(void)
 {
 	unsigned long pll_rates[] = {
 		[CLK_APMIXED_ARMPLL] =   1300000000,