Index: source/blender/editors/space_action/space_action.c
===================================================================
--- source/blender/editors/space_action/space_action.c	(revision 25306)
+++ source/blender/editors/space_action/space_action.c	(working copy)
@@ -289,6 +289,9 @@
 				case ND_KEYS:
 					ED_region_tag_redraw(ar);
 					break;
+				case ND_MODIFIER_RENAME:
+					ED_region_tag_redraw(ar);
+					break;
 			}
 			break;
 		case NC_ID:
@@ -329,6 +332,9 @@
 				case ND_TRANSFORM:
 					ED_region_tag_redraw(ar);
 					break;
+				case ND_MODIFIER_RENAME:
+					ED_region_tag_redraw(ar);
+					break;
 			}
 			break;
 		case NC_NODE:
Index: source/blender/editors/space_buttons/space_buttons.c
===================================================================
--- source/blender/editors/space_buttons/space_buttons.c	(revision 25306)
+++ source/blender/editors/space_buttons/space_buttons.c	(working copy)
@@ -280,6 +280,12 @@
 					/* currently works by redraws... if preview is set, it (re)starts job */
 					sbuts->preview= 1;
 					break;
+				case ND_PARTICLE_RENAME:
+					ED_area_tag_redraw(sa);
+					break;
+				case ND_MODIFIER_RENAME:
+					ED_area_tag_redraw(sa);
+					break;
 			}
 			break;
 		case NC_GEOM:
Index: source/blender/editors/space_graph/space_graph.c
===================================================================
--- source/blender/editors/space_graph/space_graph.c	(revision 25306)
+++ source/blender/editors/space_graph/space_graph.c	(working copy)
@@ -398,6 +398,9 @@
 				case ND_KEYS:
 					ED_region_tag_redraw(ar);
 					break;
+				case ND_MODIFIER_RENAME:
+					ED_region_tag_redraw(ar);
+					break;
 			}
 			break;
 		case NC_NODE:
Index: source/blender/editors/space_outliner/space_outliner.c
===================================================================
--- source/blender/editors/space_outliner/space_outliner.c	(revision 25306)
+++ source/blender/editors/space_outliner/space_outliner.c	(working copy)
@@ -133,6 +133,9 @@
 				case ND_TRANSFORM:
 					ED_region_tag_redraw(ar);
 					break;
+				case ND_MODIFIER_RENAME:
+					ED_region_tag_redraw(ar);
+					break;
 			}
 		case NC_GROUP:
 			/* all actions now, todo: check outliner view mode? */
Index: source/blender/makesrna/intern/rna_modifier.c
===================================================================
--- source/blender/makesrna/intern/rna_modifier.c	(revision 25306)
+++ source/blender/makesrna/intern/rna_modifier.c	(working copy)
@@ -1954,6 +1954,7 @@
 	prop= RNA_def_property(srna, "name", PROP_STRING, PROP_NONE);
 	RNA_def_property_string_funcs(prop, NULL, NULL, "rna_Modifier_name_set");
 	RNA_def_property_ui_text(prop, "Name", "Modifier name.");
+	RNA_def_property_update(prop, NC_OBJECT|ND_MODIFIER_RENAME, NULL);
 	RNA_def_struct_name_property(srna, prop);
 	
 	/* enums */
Index: source/blender/makesrna/intern/rna_particle.c
===================================================================
--- source/blender/makesrna/intern/rna_particle.c	(revision 25306)
+++ source/blender/makesrna/intern/rna_particle.c	(working copy)
@@ -1904,6 +1904,7 @@
 
 	prop= RNA_def_property(srna, "name", PROP_STRING, PROP_NONE);
 	RNA_def_property_ui_text(prop, "Name", "Particle system name.");
+	RNA_def_property_update(prop, NC_OBJECT|ND_PARTICLE_RENAME, NULL);
 	RNA_def_struct_name_property(srna, prop);
 
 	/* access to particle settings is redirected through functions */
Index: source/blender/windowmanager/WM_types.h
===================================================================
--- source/blender/windowmanager/WM_types.h	(revision 25306)
+++ source/blender/windowmanager/WM_types.h	(working copy)
@@ -179,10 +179,12 @@
 #define ND_BONE_SELECT		(20<<16)
 #define ND_DRAW				(21<<16)
 #define ND_MODIFIER			(22<<16) /* modifiers edited */
-#define ND_KEYS				(23<<16)
-#define ND_CONSTRAINT		(24<<16) /* constraints edited */
-#define ND_PARTICLE_DATA	(25<<16) /* particles edited */
-#define ND_PARTICLE_SELECT	(26<<16) /* particles selecting change */
+#define ND_MODIFIER_RENAME	(23<<16) /* modifier name change */
+#define ND_KEYS				(24<<16)
+#define ND_CONSTRAINT		(25<<16) /* constraints edited */
+#define ND_PARTICLE_DATA	(26<<16) /* particles edited */
+#define ND_PARTICLE_SELECT	(27<<16) /* particles selecting change */
+#define ND_PARTICLE_RENAME	(28<<16) /* particle name change */
 
 	/* NC_MATERIAL Material */
 #define	ND_SHADING			(30<<16)