diff --git a/extern/libqhull/geom2.c b/extern/libqhull/geom2.c
index 82ec4936efe6..c32a97daeadf 100644
--- a/extern/libqhull/geom2.c
+++ b/extern/libqhull/geom2.c
@@ -1989,7 +1989,7 @@ boolT qh_sharpnewfacets(void) {
 
   qh_voronoi_center( dim, points )
     return Voronoi center for a set of points
-    dim is the orginal dimension of the points
+    dim is the original dimension of the points
     gh.gm_matrix/qh.gm_row are scratch buffers
 
   returns: