diff --git a/doc/file-format.xml b/doc/file-format.xml
index 1803565e..dc9afe0d 100644
--- a/doc/file-format.xml
+++ b/doc/file-format.xml
@@ -92,21 +92,21 @@ $ vips gamma t.v output.tif
4 -- 7
- %gint
+ int32
width
Width of image, in pixels
8 -- 11
- %gint
+ int32
height
Height of image, in pixels
12 -- 15
- %gint
+ int32
bands
Number of image bands
@@ -141,14 +141,14 @@ $ vips gamma t.v output.tif
32 -- 35
- %gfloat
+ float32
xres
Horizontal resolution, in pixels per millimetre
36 -- 39
- %gfloat
+ float32
yres
Vertical resolution, in pixels per millimetre
@@ -162,14 +162,14 @@ $ vips gamma t.v output.tif
48 -- 51
- %gint
+ int32
xoffset
Horizontal offset of origin, in pixels
52 -- 55
- %gint
+ int32
yoffset
Vertical offset of origin, in pixels