diff --git a/examples/laser/inputs_chirp b/examples/laser/inputs_chirp
index bc2510d2d4..bfbb840cc6 100644
--- a/examples/laser/inputs_chirp
+++ b/examples/laser/inputs_chirp
@@ -5,8 +5,8 @@ hipace.verbose = 3
 amr.n_cell = 511 255 500
 hipace.do_tiling = 0
 
-geometry.prob_lo = -20e-6   -20e-6   -8e-6
-geometry.prob_hi =  20e-6    20e-6    8e-6
+geometry.prob_lo = -20e-6   -20e-6   -12e-6
+geometry.prob_hi =  20e-6    20e-6    12e-6
 
 lasers.names = laser
 lasers.lambda0 = .6e-6