2 files changed, 4 insertions, 4 deletions

diff --git a/arch/i386/boot/setup.S b/arch/i386/boot/setup.S
index d2b684cd620a..3aec4538a113 100644
--- a/arch/i386/boot/setup.S
+++ b/arch/i386/boot/setup.S
@@ -494,12 +494,12 @@ no_voyager:
         movw    %cs, %ax                        # aka SETUPSEG
         subw    $DELTA_INITSEG, %ax             # aka INITSEG
         movw    %ax, %ds
-        movw    $0, (0x1ff)                     # default is no pointing device
+        movb    $0, (0x1ff)                     # default is no pointing device
         int     $0x11                           # int 0x11: equipment list
         testb   $0x04, %al                      # check if mouse installed
         jz      no_psmouse
 
-        movw    $0xAA, (0x1ff)                  # device present
+        movb    $0xAA, (0x1ff)                  # device present
 no_psmouse:
 
 #if defined(CONFIG_X86_SPEEDSTEP_SMI) || defined(CONFIG_X86_SPEEDSTEP_SMI_MODULE)
diff --git a/arch/x86_64/boot/setup.S b/arch/x86_64/boot/setup.S
index a50b631f4d2b..c3bfd223ab49 100644
--- a/arch/x86_64/boot/setup.S
+++ b/arch/x86_64/boot/setup.S
@@ -526,12 +526,12 @@ is_disk1:
         movw    %cs, %ax                        # aka SETUPSEG
         subw    $DELTA_INITSEG, %ax             # aka INITSEG
         movw    %ax, %ds
-        movw    $0, (0x1ff)                     # default is no pointing device
+        movb    $0, (0x1ff)                     # default is no pointing device
         int     $0x11                           # int 0x11: equipment list
         testb   $0x04, %al                      # check if mouse installed
         jz      no_psmouse
 
-        movw    $0xAA, (0x1ff)                  # device present
+        movb    $0xAA, (0x1ff)                  # device present
 no_psmouse:
 
 #include "../../i386/boot/edd.S"