diff --git a/firmware/common/hackrf_core.c b/firmware/common/hackrf_core.c
index 9c4f9d52..545b57e5 100644
--- a/firmware/common/hackrf_core.c
+++ b/firmware/common/hackrf_core.c
@@ -749,7 +749,6 @@ void cpu_clock_init(void)
 	CCU1_CLK_M4_EMC_CFG = 0;
 	CCU1_CLK_M4_EMCDIV_CFG = 0;
 	CCU1_CLK_M4_ETHERNET_CFG = 0;
-	CCU1_CLK_M4_GPIO_CFG = 0;
 	CCU1_CLK_M4_LCD_CFG = 0;
 	CCU1_CLK_M4_QEI_CFG = 0;
 	CCU1_CLK_M4_RITIMER_CFG = 0;
@@ -766,15 +765,15 @@ void cpu_clock_init(void)
 	CCU1_CLK_M4_USART3_CFG = 0;
 	CCU1_CLK_M4_USB1_CFG = 0;
 	CCU1_CLK_M4_VADC_CFG = 0;
-	CCU1_CLK_SPIFI_CFG = 0;
-	CCU1_CLK_USB1_CFG = 0;
-	CCU1_CLK_VADC_CFG = 0;
-	CCU2_CLK_APB0_UART1_CFG = 0;
-	CCU2_CLK_APB0_USART0_CFG = 0;
-	CCU2_CLK_APB2_USART2_CFG = 0;
-	CCU2_CLK_APB2_USART3_CFG = 0;
-	CCU2_CLK_APLL_CFG = 0;
-	CCU2_CLK_SDIO_CFG = 0;
+	// CCU1_CLK_SPIFI_CFG = 0;
+	// CCU1_CLK_USB1_CFG = 0;
+	// CCU1_CLK_VADC_CFG = 0;
+	// CCU2_CLK_APB0_UART1_CFG = 0;
+	// CCU2_CLK_APB0_USART0_CFG = 0;
+	// CCU2_CLK_APB2_USART2_CFG = 0;
+	// CCU2_CLK_APB2_USART3_CFG = 0;
+	// CCU2_CLK_APLL_CFG = 0;
+	// CCU2_CLK_SDIO_CFG = 0;
 }