diff --git a/gzdoom.spec b/gzdoom.spec
index 9899456..0c442f7 100644
--- a/gzdoom.spec
+++ b/gzdoom.spec
@@ -72,6 +72,8 @@ GZDoom is a port (a modification) of the original Doom source code, featuring:
   ZScript, and various modding features regarding actors and scenery.
 * Demo record/playback of classic and Boom demos is not supported.
 
+The executables hard-require SSE2 on i686 currently.
+
 %prep
 %autosetup -n %name-g%version -p1
 perl -i -pe 's{__DATE__}{"does not matter when"}g' src/common/platform/posix/sdl/i_main.cpp