diff --git a/src/py/bbctrl/Mach.py b/src/py/bbctrl/Mach.py
index 09315f9..b3f6af8 100644
--- a/src/py/bbctrl/Mach.py
+++ b/src/py/bbctrl/Mach.py
@@ -52,9 +52,9 @@ axis_homing_procedure = '''
 
 stall_homing_procedure = '''
   G91 G1 %(axis)s [#<_%(axis)s_zero_backoff> * -1] F[#<_%(axis)s_search_velocity>]
-  G4 250
+  G4 P0.25
   G91 G1 %(axis)s [#<_%(axis)s_zero_backoff>] F[#<_%(axis)s_search_velocity>]
-  G4 250
+  G4 P0.25
   G28.2 %(axis)s0 F[#<_%(axis)s_search_velocity>]
   G38.6 %(axis)s[#<_%(axis)s_home_travel>]
   G91 G1 G53 %(axis)s[#<_%(axis)s_zero_backoff>] F100