diff --git a/examples/particles_generation/001b_build_particles_shift.py b/examples/particles_generation/001b_build_particles_shift.py
index 3f8374c..36fd34c 100644
--- a/examples/particles_generation/001b_build_particles_shift.py
+++ b/examples/particles_generation/001b_build_particles_shift.py
@@ -12,7 +12,7 @@
 # Choose a context
 ctx = xo.ContextCpu()
 
-# Built a set of three particles with different x coordinates
+# Built a set of three particles with different y coordinates
 particles = xp.build_particles(mode='shift', particle_ref=p0, y=[1,2,3],
                                _context=ctx)