diff --git a/ChangeLog b/ChangeLog
index 85edb20c0b..075fa969e2 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1706,9 +1706,13 @@
 	* configs/lpcxpresso-lpc1668/nx: Add a NX graphics configuration for the LPCXPRESO
 	  board.
 	* graphics/nxglib/nxglib_nonintersecting.c: Fix some single bit errors in
-	  calculation of non-intersecting regions.  This was causing an anomoaly
+	  calculation of non-intersecting regions.  This was causing an anomaly
 	  in examples/nx in column 0.
 	* drivers/mtd/rammtd.c: Added a RAM based MTD driver.  This RAM driver simulates
 	  FLASH and is useful for testing purposes.
+	* arch/arm/src/arm/up_head.S: Fix backward conditional compilation.  This cause
+	  the configs/mx1ads configuration to fail to build but does not appear to affect
+	  any other ARM9 build.
+
 
 
diff --git a/arch/arm/src/arm/up_head.S b/arch/arm/src/arm/up_head.S
index 6afdeeb174..7ed94bd9a6 100644
--- a/arch/arm/src/arm/up_head.S
+++ b/arch/arm/src/arm/up_head.S
@@ -177,7 +177,7 @@
  * to the base address of the section containing both.
  */
 
-#ifndef CONFIG_ARCH_LOWVECTORS
+#ifdef CONFIG_ARCH_LOWVECTORS
 	.macro	mksection, section, pgtable
 	bic	\section, \pgtable, #0x000ff000
 	.endm
@@ -306,7 +306,6 @@ __start:
 #endif /* CONFIG_PAGING */
 #endif /* CONFIG_ARCH_ROMPGTABLE */
 
-
 	/* The following logic will set up the ARM920/ARM926 for normal operation.
 	 *
 	 * Here we expect to have:
diff --git a/arch/arm/src/imx/imx_boot.c b/arch/arm/src/imx/imx_boot.c
index 9cd4d390ea..65a6951ce9 100644
--- a/arch/arm/src/imx/imx_boot.c
+++ b/arch/arm/src/imx/imx_boot.c
@@ -117,7 +117,7 @@ extern void imx_boardinitialize(void);
 
 static inline void up_setlevel1entry(uint32_t paddr, uint32_t vaddr, uint32_t mmuflags)
 {
-  uint32_t *pgtable = (uint32_t*)PGTABLE_VBASE;
+  uint32_t *pgtable = (uint32_t*)PGTABLE_BASE_VADDR;
   uint32_t  index   = vaddr >> 20;
 
   /* Save the page table entry */
diff --git a/arch/arm/src/imx/imx_memorymap.h b/arch/arm/src/imx/imx_memorymap.h
index 0b7603befb..7eafc908a5 100644
--- a/arch/arm/src/imx/imx_memorymap.h
+++ b/arch/arm/src/imx/imx_memorymap.h
@@ -233,19 +233,19 @@
  * We will reuse this memory for coarse page tables as follows:
  */
 
-#define PGTABLE_PBASE             IMX_SDRAM0_PSECTION
-#define PGTABLE_SDRAM_PBASE       PGTABLE_PBASE
-#define PGTABLE_COARSE_PBASE      (PGTABLE_PBASE+0x00000800)
-#define PGTABLE_COARSE_PEND       (PGTABLE_PBASE+0x00003000)
-#define PTTABLE_PERIPHERALS_PBASE (PGTABLE_PBASE+0x00003000)
-#define PGTABLE_PEND              (PGTABLE_PBASE+0x00004000)
+#define PGTABLE_BASE_PADDR        IMX_SDRAM0_PSECTION
+#define PGTABLE_SDRAM_PADDR       PGTABLE_BASE_PADDR
+#define PGTABLE_COARSE_PBASE      (PGTABLE_BASE_PADDR+0x00000800)
+#define PGTABLE_COARSE_PEND       (PGTABLE_BASE_PADDR+0x00003000)
+#define PTTABLE_PERIPHERALS_PBASE (PGTABLE_BASE_PADDR+0x00003000)
+#define PGTABLE_PEND              (PGTABLE_BASE_PADDR+0x00004000)
 
-#define PGTABLE_VBASE             IMX_SDRAM_VSECTION
-#define PGTABLE_SDRAM_VBASE       PGTABLE_VBASE
-#define PGTABLE_COARSE_VBASE      (PGTABLE_VBASE+0x00000800)
-#define PGTABLE_COARSE_VEND       (PGTABLE_VBASE+0x00003000)
-#define PTTABLE_PERIPHERALS_VBASE (PGTABLE_VBASE+0x00003000)
-#define PGTABLE_VEND              (PGTABLE_VBASE+0x00004000)
+#define PGTABLE_BASE_VADDR        IMX_SDRAM_VSECTION
+#define PGTABLE_SDRAM_VADDR       PGTABLE_BASE_VADDR
+#define PGTABLE_COARSE_VBASE      (PGTABLE_BASE_VADDR+0x00000800)
+#define PGTABLE_COARSE_VEND       (PGTABLE_BASE_VADDR+0x00003000)
+#define PTTABLE_PERIPHERALS_VBASE (PGTABLE_BASE_VADDR+0x00003000)
+#define PGTABLE_VEND              (PGTABLE_BASE_VADDR+0x00004000)
 
 #define PGTABLE_COARSE_TABLE_SIZE (4*256)
 #define PGTABLE_COARSE_ALLOC      (PGTABLE_COARSE_VEND-PGTABLE_COARSE_VBASE)
diff --git a/drivers/mtd/rammtd.c b/drivers/mtd/rammtd.c
index 707192d888..5bdfa50179 100644
--- a/drivers/mtd/rammtd.c
+++ b/drivers/mtd/rammtd.c
@@ -44,7 +44,9 @@
 #include <string.h>
 #include <assert.h>
 #include <errno.h>
+#include <debug.h>
 
+#include <nuttx/kmalloc.h>
 #include <nuttx/ioctl.h>
 #include <nuttx/mtd.h>
 
@@ -316,7 +318,7 @@ FAR struct mtd_dev_s *rammtd_initialize(FAR uint8_t *start, size_t size)
 
   /* Create an instance of the RAM MTD device state structure */
 
-  priv = (FAR struct ram_dev_s *)kzmalloc(sizeof(struct ram_dev_s));
+  priv = (FAR struct ram_dev_s *)kmalloc(sizeof(struct ram_dev_s));
   if (!priv)
     {
       fdbg("Failed to allocate the RAM MTD state structure\n");
diff --git a/fs/fat/fs_fat32.c b/fs/fat/fs_fat32.c
index 25354e9365..2d880dabc9 100644
--- a/fs/fat/fs_fat32.c
+++ b/fs/fat/fs_fat32.c
@@ -216,6 +216,7 @@ static int fat_open(FAR struct file *filep, const char *relpath,
       if ((oflags & (O_CREAT|O_EXCL)) == (O_CREAT|O_EXCL))
         {
           /* Already exists -- can't create it exclusively */
+
           ret = -EEXIST;
           goto errout_with_semaphore;
         }
@@ -251,7 +252,6 @@ static int fat_open(FAR struct file *filep, const char *relpath,
         }
 
       /* fall through to finish the file open operations */
-
     }
   else if (ret == -ENOENT)
     {
diff --git a/include/sys/stat.h b/include/sys/stat.h
index ec3715dc8b..bb166e7e25 100644
--- a/include/sys/stat.h
+++ b/include/sys/stat.h
@@ -105,7 +105,7 @@ struct stat
   mode_t    st_mode;    /* File type, atributes, and access mode bits */
   off_t     st_size;    /* Size of file/directory, in bytes */
   blksize_t st_blksize; /* Blocksize used for filesystem I/O */
-  blkcnt_t  st_blocks;  /* Number of blocks allocated*/
+  blkcnt_t  st_blocks;  /* Number of blocks allocated */
   time_t    st_atime;   /* Time of last access */
   time_t    st_mtime;   /* Time of last modification */
   time_t    st_ctime;   /* Time of last status change */