diff --git a/Source/smokeview/drawGeometry.c b/Source/smokeview/drawGeometry.c
index bfa49ccef..0387019e0 100644
--- a/Source/smokeview/drawGeometry.c
+++ b/Source/smokeview/drawGeometry.c
@@ -2046,7 +2046,7 @@ void ObstOrVent2Faces(const meshdata *meshi, blockagedata *bc,
         }
       }
       if(vi!=NULL){
-        if(ABS(vi->type)==99){
+        if(ABS(vi->type)==99||vi->type==-1){
           faceptr->type=face_surf->type;
         }
         else{
diff --git a/Source/smokeview/update.c b/Source/smokeview/update.c
index 049888e7c..b3e7ef561 100644
--- a/Source/smokeview/update.c
+++ b/Source/smokeview/update.c
@@ -365,7 +365,9 @@ void UpdateShow(void){
   int showhvacflag;
 
   UpdateFileLoad();
-  if(nplot3dloaded > 0 || npatchloaded > 0)updatefacelists = 1;
+  if(global_scase.have_removable_obsts==1){
+    if(nplot3dloaded > 0 || npatchloaded > 0)updatefacelists = 1;
+  }
   showtime             = 0;
   showtime2            = 0;
   showplot3d           = 0;