diff --git a/source/blender/makesrna/intern/rna_modifier.c b/source/blender/makesrna/intern/rna_modifier.c
index e53237ae2c1..96b88d98270 100644
--- a/source/blender/makesrna/intern/rna_modifier.c
+++ b/source/blender/makesrna/intern/rna_modifier.c
@@ -1974,7 +1974,7 @@ static void rna_def_modifier_boolean(BlenderRNA *brna)
 	prop = RNA_def_property(srna, "double_threshold", PROP_FLOAT, PROP_DISTANCE);
 	RNA_def_property_float_sdna(prop, NULL, "double_threshold");
 	RNA_def_property_range(prop, 0, 1.0f);
-	RNA_def_property_ui_range(prop, 0, 1, 0.0001, 7);
+	RNA_def_property_ui_range(prop, 0, 1, 0.0001, 6);
 	RNA_def_property_ui_text(prop, "Overlap Threshold",  "Threshold for checking overlapping geometry");
 	RNA_def_property_update(prop, 0, "rna_Modifier_update");
 }