diff --git a/meson.build b/meson.build
index 86ae13fd60f..34f29cf4106 100644
--- a/meson.build
+++ b/meson.build
@@ -613,7 +613,7 @@ if with_gallium_st_nine
     error('The nine state tracker requires gallium softpipe/llvmpipe.')
   elif not (with_gallium_radeonsi or with_gallium_nouveau or with_gallium_r600
             or with_gallium_r300 or with_gallium_svga or with_gallium_i915)
-    error('The nine state tracker requires at least on non-swrast gallium driver.')
+    error('The nine state tracker requires at least one non-swrast gallium driver.')
   endif
   if not with_dri3
     error('Using nine with wine requires dri3')