diff --git a/docs/gallium/tgsi.rst b/docs/gallium/tgsi.rst
index 92b8bb07a65..bacaf46e722 100644
--- a/docs/gallium/tgsi.rst
+++ b/docs/gallium/tgsi.rst
@@ -3554,7 +3554,7 @@ Declaration Interpolate
 This token is only valid for fragment shader INPUT declarations.
 
 The Interpolate field specifes the way input is being interpolated by
-the rasteriser and is one of TGSI_INTERPOLATE_*.
+the rasterizer and is one of TGSI_INTERPOLATE_*.
 
 The Location field specifies the location inside the pixel that the
 interpolation should be done at, one of ``TGSI_INTERPOLATE_LOC_*``. Note that