diff --git a/source/blender/blenkernel/intern/library_query.c b/source/blender/blenkernel/intern/library_query.c
index 7f743e7d61f..cfda7ab2682 100644
--- a/source/blender/blenkernel/intern/library_query.c
+++ b/source/blender/blenkernel/intern/library_query.c
@@ -812,7 +812,7 @@ void BKE_library_foreach_ID_link(Main *bmain, ID *id, LibraryIDLinkCallback call
 			case ID_PA:
 			{
 				ParticleSettings *psett = (ParticleSettings *) id;
-				CALLBACK_INVOKE(psett->dup_group, IDWALK_CB_NOP);
+				CALLBACK_INVOKE(psett->dup_group, IDWALK_CB_USER);
 				CALLBACK_INVOKE(psett->dup_ob, IDWALK_CB_NOP);
 				CALLBACK_INVOKE(psett->bb_ob, IDWALK_CB_NOP);
 				CALLBACK_INVOKE(psett->collision_group, IDWALK_CB_NOP);
diff --git a/source/blender/blenloader/intern/readfile.c b/source/blender/blenloader/intern/readfile.c
index da5d87d4494..1f112f41526 100644
--- a/source/blender/blenloader/intern/readfile.c
+++ b/source/blender/blenloader/intern/readfile.c
@@ -4264,7 +4264,7 @@ static void lib_link_particlesettings(FileData *fd, Main *main)
 			part->ipo = newlibadr_us(fd, part->id.lib, part->ipo); // XXX deprecated - old animation system
 
 			part->dup_ob = newlibadr(fd, part->id.lib, part->dup_ob);
-			part->dup_group = newlibadr(fd, part->id.lib, part->dup_group);
+			part->dup_group = newlibadr_us(fd, part->id.lib, part->dup_group);
 			part->eff_group = newlibadr(fd, part->id.lib, part->eff_group);
 			part->bb_ob = newlibadr(fd, part->id.lib, part->bb_ob);
 			part->collision_group = newlibadr(fd, part->id.lib, part->collision_group);