diff --git a/arch/arm/include/lpc17xx/irq.h b/arch/arm/include/lpc17xx/irq.h
index 91875804ceb..b78a005bee5 100644
--- a/arch/arm/include/lpc17xx/irq.h
+++ b/arch/arm/include/lpc17xx/irq.h
@@ -117,4 +117,3 @@ extern "C"
 #endif /* __ASSEMBLY__ */
 
 #endif /* __ARCH_ARM_INCLUDE_LPC17XX_IRQ_H */
-
diff --git a/arch/arm/src/kinetis/kinetis_irq.c b/arch/arm/src/kinetis/kinetis_irq.c
index f3b17c217ad..cc805293af1 100644
--- a/arch/arm/src/kinetis/kinetis_irq.c
+++ b/arch/arm/src/kinetis/kinetis_irq.c
@@ -315,6 +315,7 @@ static int kinetis_irqinfo(int irq, uintptr_t *regaddr, uint32_t *bit,
 
 void up_irqinitialize(void)
 {
+  uintptr_t regaddr;
   int nintlines;
   int i;
 
diff --git a/arch/arm/src/lpc17xx/lpc17_irq.c b/arch/arm/src/lpc17xx/lpc17_irq.c
index 9bb811cb99b..93b3b2de8f2 100644
--- a/arch/arm/src/lpc17xx/lpc17_irq.c
+++ b/arch/arm/src/lpc17xx/lpc17_irq.c
@@ -56,7 +56,7 @@
 #include "lpc17_clrpend.h"
 
 /****************************************************************************
- * Definitions
+ * Pre-processor Definitions
  ****************************************************************************/
 /* Get a 32-bit version of the default priority */
 
@@ -287,6 +287,7 @@ static int lpc17_irqinfo(int irq, uintptr_t *regaddr, uint32_t *bit,
 
 void up_irqinitialize(void)
 {
+  uintptr_t regaddr;
   int nintlines;
   int i;
 
diff --git a/arch/arm/src/tiva/tiva_irq.c b/arch/arm/src/tiva/tiva_irq.c
index 8f115964b11..501d8691cbf 100644
--- a/arch/arm/src/tiva/tiva_irq.c
+++ b/arch/arm/src/tiva/tiva_irq.c
@@ -289,6 +289,7 @@ static int tiva_irqinfo(int irq, uintptr_t *regaddr, uint32_t *bit,
 
 void up_irqinitialize(void)
 {
+  uintptr_t regaddr;
   int nintlines;
   int i;