Index: source/blender/makesrna/intern/rna_particle.c
===================================================================
--- source/blender/makesrna/intern/rna_particle.c	(revision 30923)
+++ source/blender/makesrna/intern/rna_particle.c	(working copy)
@@ -1582,8 +1582,8 @@
 	/* This limit is for those freaks who have the machine power to handle it. */
 	/* 10M particles take around 2.2 Gb of memory / disk space in saved file and */
 	/* each cached frame takes around 0.5 Gb of memory / disk space depending on cache mode. */
-	RNA_def_property_range(prop, 0, 10000000);
-	RNA_def_property_ui_range(prop, 0, 100000, 1, 0);
+	RNA_def_property_range(prop, 1, 10000000);
+	RNA_def_property_ui_range(prop, 1, 100000, 1, 0);
 	RNA_def_property_ui_text(prop, "Amount", "Total number of particles");
 	RNA_def_property_update(prop, 0, "rna_Particle_reset");