diff --git a/blog/2015/04/16/README.md b/blog/2015/04/16/README.md
index 65788e6a0..a5e0aa549 100644
--- a/blog/2015/04/16/README.md
+++ b/blog/2015/04/16/README.md
@@ -25,7 +25,7 @@ through F000:7FFF.  Once again, that region is mirrored at physical addresses %F
 through %FFFF7FFFF.
 
 > In other words, both 32Kb halves of the last 64Kb of both the first and last megabyte
-of the 80386's 32Gb address space are physically mapped to this ROM image.
+of the 80386's 4Gb address space are physically mapped to this ROM image.
 
 > Finally, the DeskPro 386 has a "RAM Relocation" feature that allows 128Kb of RAM at
 %00FE0000 through %00FFFFFF to be mapped to %000E0000 through %000FFFFF, effectively
diff --git a/devices/pc/bios/compaq/deskpro386/1988-01-28.nasm b/devices/pc/bios/compaq/deskpro386/1988-01-28.nasm
index 5d0b36cd7..a6fb62e9e 100644
--- a/devices/pc/bios/compaq/deskpro386/1988-01-28.nasm
+++ b/devices/pc/bios/compaq/deskpro386/1988-01-28.nasm
@@ -21,7 +21,7 @@
 ; through %FFFF7FFFF.
 ;
 ; In other words, both 32Kb halves of the last 64Kb of both the first and last megabyte
-; of the 80386's 32Gb address space are physically mapped to this ROM image.
+; of the 80386's 4Gb address space are physically mapped to this ROM image.
 ;
 ; Finally, the DeskPro 386 has a "RAM Relocation" feature that allows 128Kb of RAM at
 ; %00FE0000 through %00FFFFFF to be mapped to %000E0000 through %000FFFFF, effectively