diff --git a/arch/arm/src/efm32/efm32_rtc_burtc.c b/arch/arm/src/efm32/efm32_rtc_burtc.c
index d14383f60f2..cb493c7e82d 100644
--- a/arch/arm/src/efm32/efm32_rtc_burtc.c
+++ b/arch/arm/src/efm32/efm32_rtc_burtc.c
@@ -367,7 +367,7 @@ static uint64_t efm32_get_burtc_tick(void)
  ************************************************************************************/
 
 /************************************************************************************
- * Name: up_rtcinitialize
+ * Name: up_rtc_initialize
  *
  * Description:
  *   Initialize the hardware RTC per the selected configuration.  This function is
@@ -381,7 +381,7 @@ static uint64_t efm32_get_burtc_tick(void)
  *
  ************************************************************************************/
 
-int up_rtcinitialize(void)
+int up_rtc_initialize(void)
 {
   efm32_rtc_burtc_init();
 
diff --git a/arch/arm/src/lpc17xx/lpc176x_rtc.c b/arch/arm/src/lpc17xx/lpc176x_rtc.c
index be288db0e49..a0aa525ff73 100644
--- a/arch/arm/src/lpc17xx/lpc176x_rtc.c
+++ b/arch/arm/src/lpc17xx/lpc176x_rtc.c
@@ -263,7 +263,7 @@ static int rtc_interrupt(int irq, void *context)
  ************************************************************************************/
 
 /************************************************************************************
- * Name: up_rtcinitialize
+ * Name: up_rtc_initialize
  *
  * Description:
  *   Initialize the hardware RTC per the selected configuration.  This function is
@@ -277,7 +277,7 @@ static int rtc_interrupt(int irq, void *context)
  *
  ************************************************************************************/
 
-int up_rtcinitialize(void)
+int up_rtc_initialize(void)
 {
   int ret;
 
diff --git a/arch/arm/src/sam34/sam_rtc.c b/arch/arm/src/sam34/sam_rtc.c
index aebad747bf2..0694e276e95 100644
--- a/arch/arm/src/sam34/sam_rtc.c
+++ b/arch/arm/src/sam34/sam_rtc.c
@@ -351,7 +351,7 @@ static uint32_t rtc_sync(void)
  ************************************************************************************/
 
 /************************************************************************************
- * Name: up_rtcinitialize
+ * Name: up_rtc_initialize
  *
  * Description:
  *   Initialize the hardware RTC per the selected configuration.  This function is
@@ -365,7 +365,7 @@ static uint32_t rtc_sync(void)
  *
  ************************************************************************************/
 
-int up_rtcinitialize(void)
+int up_rtc_initialize(void)
 {
   uint32_t ver;
 
diff --git a/arch/arm/src/sama5/sam_rtc.c b/arch/arm/src/sama5/sam_rtc.c
index 51eafdcb673..58ba64a7826 100644
--- a/arch/arm/src/sama5/sam_rtc.c
+++ b/arch/arm/src/sama5/sam_rtc.c
@@ -308,7 +308,7 @@ static int rtc_interrupt(int irq, void *context)
  ************************************************************************************/
 
 /************************************************************************************
- * Name: up_rtcinitialize
+ * Name: up_rtc_initialize
  *
  * Description:
  *   Initialize the hardware RTC per the selected configuration.  This function is
@@ -322,7 +322,7 @@ static int rtc_interrupt(int irq, void *context)
  *
  ************************************************************************************/
 
-int up_rtcinitialize(void)
+int up_rtc_initialize(void)
 {
   uint32_t ver;
 
diff --git a/arch/arm/src/stm32/stm32_rtcc.c b/arch/arm/src/stm32/stm32_rtcc.c
index acfbbf57358..37aca70c51f 100644
--- a/arch/arm/src/stm32/stm32_rtcc.c
+++ b/arch/arm/src/stm32/stm32_rtcc.c
@@ -594,7 +594,7 @@ static int rtc_interrupt(int irq, void *context)
  ************************************************************************************/
 
 /************************************************************************************
- * Name: up_rtcinitialize
+ * Name: up_rtc_initialize
  *
  * Description:
  *   Initialize the hardware RTC per the selected configuration.  This function is
@@ -608,7 +608,7 @@ static int rtc_interrupt(int irq, void *context)
  *
  ************************************************************************************/
 
-int up_rtcinitialize(void)
+int up_rtc_initialize(void)
 {
   uint32_t regval;
   uint32_t tr_bkp;
diff --git a/arch/arm/src/stm32/stm32_rtcounter.c b/arch/arm/src/stm32/stm32_rtcounter.c
index d5c6cbb5f96..6f5be350a0e 100644
--- a/arch/arm/src/stm32/stm32_rtcounter.c
+++ b/arch/arm/src/stm32/stm32_rtcounter.c
@@ -350,7 +350,7 @@ static int stm32_rtc_interrupt(int irq, void *context)
  ************************************************************************************/
 
 /************************************************************************************
- * Name: up_rtcinitialize
+ * Name: up_rtc_initialize
  *
  * Description:
  *   Initialize the hardware RTC per the selected configuration.  This function is
@@ -364,7 +364,7 @@ static int stm32_rtc_interrupt(int irq, void *context)
  *
  ************************************************************************************/
 
-int up_rtcinitialize(void)
+int up_rtc_initialize(void)
 {
   /* Enable write access to the backup domain (RTC registers, RTC backup data
    * registers and backup SRAM).