2 files changed, 3 insertions, 3 deletions

diff --git a/firmware/drivers/ata.c b/firmware/drivers/ata.c
index 20e6247fb9..0983fb52ee 100644
--- a/firmware/drivers/ata.c
+++ b/firmware/drivers/ata.c
@@ -287,7 +287,7 @@ static void copy_read_sectors(unsigned char* buf, int wordcount)
 #ifdef PREFER_C_READING
     unsigned short tmp = 0;
 
-    if ( (unsigned int)buf & 1)
+    if ( (unsigned long)buf & 1)
     {   /* not 16-bit aligned, copy byte by byte */
         unsigned char* bufend = buf + wordcount*2;
         do
@@ -567,7 +567,7 @@ static void copy_write_sectors(const unsigned char* buf, int wordcount)
 {
 #ifdef PREFER_C_WRITING
 
-    if ( (unsigned int)buf & 1)
+    if ( (unsigned long)buf & 1)
     {   /* not 16-bit aligned, copy byte by byte */
         unsigned short tmp = 0;
         const unsigned char* bufend = buf + wordcount*2;
diff --git a/firmware/drivers/fat.c b/firmware/drivers/fat.c
index 4c63498b8c..3adca5e864 100644
--- a/firmware/drivers/fat.c
+++ b/firmware/drivers/fat.c
@@ -199,7 +199,7 @@ struct bpb
     int bpb_fatsz16;     /* Number of used sectors per FAT structure */
     unsigned long bpb_totsec32;    /* Number of sectors on the volume
                                      (new 32-bit) */
-    int last_word;       /* 0xAA55 */
+    unsigned int last_word;       /* 0xAA55 */
 
     /**** FAT32 specific *****/
     long bpb_fatsz32;