diff --git a/source/blender/include/BDR_editface.h b/source/blender/include/BDR_editface.h
index 7eaf47d15d8..85ba851d6bb 100644
--- a/source/blender/include/BDR_editface.h
+++ b/source/blender/include/BDR_editface.h
@@ -47,6 +47,7 @@ void select_linked_tfaces(int mode);
 void deselectall_tface(void);
 void selectswap_tface(void);
 void rotate_uv_tface(void);
+void mirror_uv_tface(void);
 void minmax_tface(float *min, float *max);
 int face_pick(struct Mesh *me, short x, short y, unsigned int *index);
 void face_select(void);
diff --git a/source/blender/src/editface.c b/source/blender/src/editface.c
index 845d371eec6..6a7a8bb4d73 100644
--- a/source/blender/src/editface.c
+++ b/source/blender/src/editface.c
@@ -892,6 +892,79 @@ void rotate_uv_tface()
 	allqueue(REDRAWIMAGE, 0);
 }
 
+void mirror_uv_tface()
+{
+	Mesh *me;
+	TFace *tface;
+	MFace *mface;
+	short mode;
+	int a;
+	
+	me= get_mesh(OBACT);
+	if(me==0 || me->tface==0) return;
+	
+	mode= pupmenu("Mirror %t|UV Co-ordinates %x1|Vertex Colors %x2");
+	
+	if(mode<1) return;
+	
+	tface= me->tface;
+	mface= me->mface;
+	a= me->totface;
+	while(a--) {
+		if(tface->flag & TF_SELECT) {
+			if(mode==1) {
+				float u1= tface->uv[0][0];
+				float v1= tface->uv[0][1];
+				if(mface->v4) {
+					tface->uv[0][0]= tface->uv[3][0];
+					tface->uv[0][1]= tface->uv[3][1];
+				
+					tface->uv[3][0]= u1;
+					tface->uv[3][1]= v1;
+
+					u1= tface->uv[1][0];
+					v1= tface->uv[1][1];
+
+					tface->uv[1][0]= tface->uv[2][0];
+					tface->uv[1][1]= tface->uv[2][1];
+				
+					tface->uv[2][0]= u1;
+					tface->uv[2][1]= v1;
+				}
+				else {
+					tface->uv[0][0]= tface->uv[2][0];
+					tface->uv[0][1]= tface->uv[2][1];
+					tface->uv[2][0]= u1;
+					tface->uv[2][1]= v1;
+				}
+			}
+			else if(mode==2) {
+				unsigned int tcol= tface->col[0];
+				if(mface->v4) {
+					tface->col[0]= tface->col[3];
+					tface->col[3]= tcol;
+
+					tcol = tface->col[1];
+					tface->col[1]= tface->col[2];
+					tface->col[2]= tcol;
+				}
+				else {
+					tface->col[0]= tface->col[2];
+					tface->col[2]= tcol;
+				}
+			}
+		}
+		tface++;
+		mface++;
+	}
+	
+	BIF_undo_push("Mirror UV face");
+	DAG_object_flush_update(G.scene, OBACT, OB_RECALC_DATA);
+	
+	allqueue(REDRAWVIEW3D, 0);
+	allqueue(REDRAWIMAGE, 0);
+}
+
 void minmax_tface(float *min, float *max)
 {
 	Object *ob;
diff --git a/source/blender/src/header_view3d.c b/source/blender/src/header_view3d.c
index 2a785ead481..ccf64b40452 100644
--- a/source/blender/src/header_view3d.c
+++ b/source/blender/src/header_view3d.c
@@ -3531,6 +3531,9 @@ static void do_view3d_faceselmenu(void *arg, int event)
 	case 7: /* rotate UVs */
 		rotate_uv_tface();
 		break;
+	case 9: /* mirror UVs */
+		mirror_uv_tface();
+		break;
 	
 	}
 	allqueue(REDRAWVIEW3D, 0);
@@ -3554,6 +3557,7 @@ static uiBlock *view3d_faceselmenu(void *arg_unused)
 
 	uiDefIconTextBut(block, BUTM, 1, ICON_BLANK1, "Unwrap UVs|U",		0, yco-=20, menuwidth, 19, NULL, 0.0, 0.0, 1, 8, "");
 	uiDefIconTextBut(block, BUTM, 1, ICON_BLANK1, "Rotate UVs|R",		0, yco-=20, menuwidth, 19, NULL, 0.0, 0.0, 1, 7, "");
+	uiDefIconTextBut(block, BUTM, 1, ICON_BLANK1, "Mirror UVs|M",		0, yco-=20, menuwidth, 19, NULL, 0.0, 0.0, 1, 9, "");
 
 	uiDefBut(block, SEPR, 0, "",				0, yco-=6, menuwidth, 6, NULL, 0.0, 0.0, 0, 0, "");
 	
diff --git a/source/blender/src/space.c b/source/blender/src/space.c
index 0757a1c1a73..d552a102ef3 100644
--- a/source/blender/src/space.c
+++ b/source/blender/src/space.c
@@ -1394,7 +1394,9 @@ static void winqreadview3dspace(ScrArea *sa, void *spacedata, BWinEvent *evt)
 				}
 				break;
  			case MKEY:
-				if(G.obedit){
+				if((G.obedit==0) && (G.f & G_FACESELECT) && (G.qual==0))
+					mirror_uv_tface();
+				else if(G.obedit){
 					if(G.qual==LR_ALTKEY) {
 						if(G.obedit->type==OB_MESH) {
 							mergemenu();