diff --git a/arch/arm/src/common/up_checkstack.c b/arch/arm/src/common/up_checkstack.c
index 12ce6f797f..55426b54b2 100644
--- a/arch/arm/src/common/up_checkstack.c
+++ b/arch/arm/src/common/up_checkstack.c
@@ -140,7 +140,7 @@ static size_t do_stackcheck(uintptr_t alloc, size_t size, bool int_stack)
       int j;
 
       ptr = (FAR uint32_t *)start;
-      for (i = 0; i < size; i += 4*64)
+      for (i = 0; i < size; i += 4 * 64)
         {
           for (j = 0; j < 64; j++)
             {
diff --git a/arch/arm/src/common/up_initialize.c b/arch/arm/src/common/up_initialize.c
index 7389b324ff..35807bc0be 100644
--- a/arch/arm/src/common/up_initialize.c
+++ b/arch/arm/src/common/up_initialize.c
@@ -139,8 +139,8 @@ void up_initialize(void)
 #endif
 
 #ifdef CONFIG_ARCH_DMA
-  /* Initialize the DMA subsystem if the weak function up_dma_initialize has been
-   * brought into the build
+  /* Initialize the DMA subsystem if the weak function up_dma_initialize has
+   * been brought into the build
    */
 
 #ifdef CONFIG_HAVE_WEAKFUNCTIONS