diff --git a/skimage/_shared/geometry.pyx b/skimage/_shared/geometry.pyx
index e739f988..6f7de4cd 100644
--- a/skimage/_shared/geometry.pyx
+++ b/skimage/_shared/geometry.pyx
@@ -30,6 +30,7 @@ cdef inline unsigned char point_in_polygon(int nr_verts, double *xp, double *yp,
         j = i
     return c
 
+
 cdef void points_in_polygon(int nr_verts, double *xp, double *yp,
                             int nr_points, double *x, double *y,
                             unsigned char *result):