Index: source/blender/editors/object/object_transform.c
===================================================================
--- source/blender/editors/object/object_transform.c	(revision 45017)
+++ source/blender/editors/object/object_transform.c	(working copy)
@@ -40,6 +40,7 @@
 #include "DNA_object_types.h"
 #include "DNA_scene_types.h"
 #include "DNA_group_types.h"
+#include "DNA_lattice_types.h"
 
 #include "BLI_math.h"
 #include "BLI_listbase.h"
@@ -398,6 +399,12 @@
 				return OPERATOR_CANCELLED;
 			}
 		}
+		else if(ob->type==OB_LATTICE) {
+			if(ID_REAL_USERS(ob->data) > 1) {
+				BKE_report(reports, RPT_ERROR, "Can't apply to a multi user lattice, doing nothing");
+				return OPERATOR_CANCELLED;
+			}
+		}
 		else if(ELEM(ob->type, OB_CURVE, OB_SURF)) {
 			Curve *cu;
 
@@ -487,6 +494,16 @@
 		else if (ob->type==OB_ARMATURE) {
 			ED_armature_apply_transform(ob, mat);
 		}
+		else if (ob->type==OB_LATTICE) {
+			Lattice *lt= ob->data;
+			BPoint *bp= lt->def;
+			int a= lt->pntsu * lt->pntsv * lt->pntsw;
+			
+			while(a--) {
+				mul_m4_v3(mat, bp->vec);
+				bp++;
+			}
+		}
 		else if(ELEM(ob->type, OB_CURVE, OB_SURF)) {
 			Curve *cu= ob->data;