diff --git a/docs/Config_Reference.md b/docs/Config_Reference.md
index 5223c641..67d8d036 100644
--- a/docs/Config_Reference.md
+++ b/docs/Config_Reference.md
@@ -250,6 +250,11 @@ max_z_velocity:
 #   maximum speed of up/down moves (which require a higher step rate
 #   than other moves on a delta printer). The default is to use
 #   max_velocity for max_z_velocity.
+#max_z_accel:
+#   This sets the maximum acceleration (in mm/s^2) of movement along
+#   the z axis. Setting this may be useful if the printer can reach higher
+#   acceleration on XY moves than Z moves (eg, when using input shaper).
+#   The default is to use max_accel for max_z_accel.
 #minimum_z_position: 0
 #   The minimum Z position that the user may command the head to move
 #   to. The default is 0.
diff --git a/klippy/kinematics/delta.py b/klippy/kinematics/delta.py
index 57d3db1f..4c5076f7 100644
--- a/klippy/kinematics/delta.py
+++ b/klippy/kinematics/delta.py
@@ -30,6 +30,8 @@ class DeltaKinematics:
         self.max_z_velocity = config.getfloat(
             'max_z_velocity', self.max_velocity,
             above=0., maxval=self.max_velocity)
+        self.max_z_accel = config.getfloat('max_z_accel', self.max_accel,
+                                          above=0., maxval=self.max_accel)
         # Read radius and arm lengths
         self.radius = radius = config.getfloat('delta_radius', above=0.)
         print_radius = config.getfloat('print_radius', radius, above=0.)
@@ -130,7 +132,8 @@ class DeltaKinematics:
             limit_xy2 = -1.
         if move.axes_d[2]:
             z_ratio = move.move_d / abs(move.axes_d[2])
-            move.limit_speed(self.max_z_velocity * z_ratio, move.accel)
+            move.limit_speed(self.max_z_velocity * z_ratio,
+                             self.max_z_accel * z_ratio)
             limit_xy2 = -1.
         # Limit the speed/accel of this move if is is at the extreme
         # end of the build envelope