diff --git a/binarycpython/utils/grid.py b/binarycpython/utils/grid.py
index 632aa8f0918561f87aee254e8fdcae2d80873f95..0ac0f2ccbc5134bde0e8587243945bcf705fbd51 100644
--- a/binarycpython/utils/grid.py
+++ b/binarycpython/utils/grid.py
@@ -3577,7 +3577,7 @@ class Population:
             parameter_name="multiplicity",
             longname="multiplicity",
             valuerange=[1, max_multiplicity],
-            resolution=5,
+            resolution=4,
             spacingfunc="range(1, 5)",
             precode='self.grid_options["multiplicity"] = multiplicity; self.bse_options["multiplicity"] = multiplicity; options={}'.format(
                 self.grid_options['m&s_options']