diff --git a/source/blender/src/buttons_shading.c b/source/blender/src/buttons_shading.c
index 2ac76942da7..be307a649b3 100644
--- a/source/blender/src/buttons_shading.c
+++ b/source/blender/src/buttons_shading.c
@@ -2283,8 +2283,8 @@ static void world_panel_world(World *wrld)
 
 	uiBlockBeginAlign(block);
 	uiBlockSetCol(block, TH_BUT_SETTING1);
-	uiDefButF(block, NUMSLI,B_WORLDPRV, "Exp ",			160,30,145,19,	&(wrld->exp), 0.0, 1.0, 0, 2, "Sets amount of exponential color correction for light");
-	uiDefButF(block, NUMSLI,B_WORLDPRV, "Range ",		160,10,145,19,	&(wrld->range), 0.2, 5.0, 0, 2, "Sets the color amount that will be mapped on color 1.0");
+	uiDefButF(block, NUMSLI,B_WORLDPRV2, "Exp ",			160,30,145,19,	&(wrld->exp), 0.0, 1.0, 0, 2, "Sets amount of exponential color correction for light");
+	uiDefButF(block, NUMSLI,B_WORLDPRV2, "Range ",		160,10,145,19,	&(wrld->range), 0.2, 5.0, 0, 2, "Sets the color amount that will be mapped on color 1.0");
 
 
 }
@@ -2968,7 +2968,7 @@ void do_matbuts(unsigned short event)
 		allqueue(REDRAWBUTSSHADING, 0);
 		break;
 	case B_WORLDPRV2:
-		BIF_preview_changed(ID_WO);
+		BIF_preview_changed(ID_TE);
 		allqueue(REDRAWBUTSSHADING, 0);
 		allqueue(REDRAWVIEW3D, 0);
 		break;
diff --git a/source/blender/src/previewrender.c b/source/blender/src/previewrender.c
index 2f7b4754d76..383b73b7619 100644
--- a/source/blender/src/previewrender.c
+++ b/source/blender/src/previewrender.c
@@ -270,6 +270,11 @@ static Scene *preview_prepare_scene(RenderInfo *ri, int id_type, ID *id, int pr_
 		sce->r.scemode |= R_PREVIEWBUTS;
 		/* set world always back, is used now */
 		sce->world= pr_main->world.first;
+		/* now: exposure copy */
+		if(G.scene->world) {
+			sce->world->exp= G.scene->world->exp;
+			sce->world->range= G.scene->world->range;
+		}
 		
 		sce->r.cfra= G.scene->r.cfra;